http://esl.about.com/od/grammarstructures/ig/Tenses-Chart/spresent.htm 9/13/2012 8:47 PM ©2012 About.com. All rights reserved. A part of The New York Times Company. Present Simple Structure and Usage The present simple is used to express daily routines and habits. Adverbs of frequency such as 'usually', 'sometimes', 'rarely', etc. are often used with the present simple. This tense is often used with the following time expressions: always, usually, sometimes, etc. ... every day ... on Sundays, Tuesdays, etc. Basic Construction Positive Subject + Present Tense + object(s) + time Expression Frank usually takes a bus to work. Negative Subject + do / does + not (don't / doesn't) + verb + object(s) + time Expression They don't often go to Chicago. Question (Question Word) + do / does + subject + verb + object(s) + time Expression How often do you play golf? Present Continuous for Action at the Moment Structure and Usage One use of the present continuous tense is for action that is occurring at the moment of speaking. Remember that only action verbs can take the continuous form. This tense is often used with the following time expressions: ... at the moment ... now ... today ... this morning / afternoon / evening Basic Construction Positive Subject + be + verb + ing + object(s) + time Expression She's watching TV at the moment. Negative Subject + be + not (isn't, aren't) + verb + ing + object(s) + time Expression They aren't having fun this morning. Question (Question Word) + be + subject + verb + ing + object(s) + time Expression What are you doing? Present Continuous for Current Projects Structure and Usage Use the present continuous to describe projects and actions that are happening around the present moment in time. Remember that these projects have begun in the recent past and will end in the near future. This usage is especially popular for talking about current projects at work or for specific hobbies. This tense is often used with the following time expressions: ... at the moment ... now ... this week / month Basic Construction Positive Subject + be + verb + ing + object(s) + time Expression We're working on the Smith account this month. Negative Subject + be + not (isn't, aren't) + verb + ing + object(s) + time Expression He isn't studying French this semester. Question (Question Word) + be + subject + verb + ing + object(s) + time Expression Which account are you working on this week? Present Continuous for Scheduled Events Structure and Usage One use of the present continuous tense is for scheduled future events. This usage is especially useful when talking about appointments and meetings for work. This tense is often used with the following time expressions: ... tomorrow ... on Friday, Monday, etc. ... today ... this morning / afternoon / evening ... next week / month ... in December, March, etc. Basic Construction Positive Subject + be + verb + ing + object(s) + time Expression I'm meeting our CEO at three o'clock this afternoon. Negative Subject + be + not (isn't, aren't) + verb + ing + object(s) + time Expression Shelley isn't attending the meeting tomorrow. Question (Question Word) + be + subject + verb + ing + object(s) + time Expression When are you discussing the situation with Tom? Past Simple Structure and Usage The past simple is used to express something that happened a past point in time. Remember to always use a past time expression, or a clear contextual clue when using the past simple. If you do not indicate when something happened, use the present perfect for unspecified past. This tense is often used with the following time expressions: ... ago ... in + year / month ...yesterday ...last week / month / year ... when .... Basic Construction Positive Subject + Past Tense + object(s) + time Expression I went to the doctor's yesterday. Negative Subject + did + not (didn't) + verb + object(s) + time Expression They didn't join us for dinner last week. Question (Question Word) + did + subject + verb + object(s) + time Expression When did you buy that pullover? Past Continuous for Exact Times in the Past Structure and Usage The past continuous tense is used to describe what was happening at a specific moment in time in the past. Do not use this form when referring to longer periods of time in the past such as 'last March', 'two years ago', etc. Use the past continuous with times of the day in the past. This tense is often used with the following time expressions: ... at 5.20, three o'clock, etc. Basic Construction Positive Subject + was / were + verb + ing + object(s) + time Expression We were meeting with Jane at two o'clock yesterday afternoon. Negative Subject + was / were + not (wasn't, weren't) + verb + ing + object(s) + time Expression They weren't playing tennis at five o'clock on Saturday. Question (Question Word) + was / were + subject + verb + ing + object(s) + time Expression What were you doing at two-thirty yesterday afternoon? Past Continuous for Interrupted Action Structure and Usage Use the past continuous to express what was happening when something important happened. This form is almost always used with the time clause '... when xyz happened'. It is also possible to use this form with '... while something was happening' to express two past actions that were occurring simultaneously. This tense is often used with the following time expressions: ... when xyz happened ... while xyz was happening. Basic Construction Positive Subject + was / were + verb + ing + object(s) + time Expression Sharon was watching TV when she received the telephone call. Negative Subject + was / were + not (wasn't, weren't) + verb + ing + object(s) + time Expression We weren't doing anything important when you arrived. Question (Question Word) + was / were + subject + verb + ing + object(s) + time Expression What were you doing when Tom gave you the bad news? Future with Going to for Future Plans The future with 'going to' is used to express future plans or scheduled events. It is often used instead of the present continuous for future scheduled work events. Either form can be used for this purpose. This tense is often used with the following time expressions: ... next week / month ... tomorrow ... on Monday, Tuesday, etc. Basic Construction Positive Subject + be + going to + verb + object(s) + time Expression Tom is going to fly to Los Angeles next on Tuesday. Negative Subject + be not (isn't, aren't) + going to + verb + object(s) + time Expression They aren't going to attend the conference next month. Question (Question Word) + be + subject + going to + verb + object(s) + time Expression When are you going to meet Jack? Future with Will for Promises and Predictions Structure and Usage The future with 'will' is used to make future predictions and promises. Often the precise moment the action will occur is unknown or not defined. This tense is often used with the following time expressions: ... soon ... next month / year / week Basic Construction Positive Subject + will + verb + object(s) + time Expression The government will increase taxes soon. Negative Subject + will not (won't) + verb + object(s) + time Expression She won't help us much with the project. Question (Question Word) + will + subject + verb + object(s) + time Expression Why will they reduce taxes? Future with Going to for Future Intent Structure and Usage The future with 'going to' is used for future intent. Remember that you can express a future intent without expressing the exact future time that something will occur. This use of the future with 'going to' can be used to discuss future study plans, career plans, and more. This tense is often used with the following time expressions: ... next week / month ... tomorrow ... on Monday, Tuesday, etc. Basic Construction Positive Subject + be + going to + verb + object(s) + time Expression Anna is going to study medicine at university. Negative Subject + be not (isn't, aren't) + going to + verb + object(s) + time Expression They aren't going to develop any new projects for the next few years. Question (Question Word) + be + subject + going to + verb + object(s) + time Expression Why are you going to change your job? Present Perfect for Past to Present States and Actions Structure and Usage Use the present perfect to express a state or repeated action that began in the past and continues into the moment of speaking. The present perfect or the present perfect continuous can often be interchanged. The main difference between these two forms is that the present perfect continuous is generally used to express the length of the current activity up to the present moment in time. This tense is often used with the following time expressions: ... for + amount of time ... since + specific point in time Basic Construction Positive Subject + have / has + past participle + object(s) + time Expression I have lived in Portland for four years. Negative Subject + have / has not (haven't, hasn't) + past participle + object(s) + time Expression Max hasn't played tennis since 1999. Question (Question Word) + have / has + subject + past participle + object(s) + time Expression Where have you worked since 2002? Present Perfect to Express Recent Events Structure and Usage The present perfect is often used to express recent events that affect the present moment. These sentences generally use the time expressions 'just', 'yet', 'already', or 'recently' to express this connection. Remember that if you give a specific time in the past, the past simple is required. This tense is often used with the following time expressions: just yet already recently Basic Construction Positive Subject + have / has + just / recently + past participle + object(s) Henry has just gone to the bank. Negative Subject + have / has not (haven't, hasn't) + past participle + object(s) + time Expression Peter hasn't finished his homework yet. Question (Question Word) + have / has + subject + past participle + object(s) + time Expression Have you spoken to Andy yet? Present Perfect for Unspecified Past Events Structure and Usage The present perfect is often used to express events that occurred in the past at an unspecified moment. This form is often used to express cumulative life experiences up to the present moment. Remember that if you use a specific past time expression, choose the past simple. This tense is often used with the following time expressions: twice, three times, four times, etc. ever never Basic Construction Positive Subject + have / has + past participle + object(s) Peter has visited Europe three times in his life. Negative Subject + have / has not (haven't, hasn't) + past participle + object(s) + time Expression I haven't played golf many times. Question (Question Word) + have / has + subject + (ever) + past participle + object(s) Have you ever been to France? Present Perfect Continuous Structure and Usage The present perfect continuous is used to express how long a current activity has been going on. It is often used in context to provide a reason for a present result. Remember that continuous forms can only be used with action verbs. This tense is often used with the following time expressions: ...since + specific point in time ... for + amount of time Basic Construction Positive Subject + has / have + been + verb + ing + object(s) + time Expression He's been cleaning house for two hours. Negative Subject + has / have not (hasn't / haven't) + been + verb + ing + object(s) + time Expression Janice hasn't been studying for too long. Question (Question Word) + has / have + subject + been + verb + ing + object(s) + (time Expression) How long have you been working in the garden? Future Perfect Structure and Usage Use the future perfect tense to express what will happened by a certain time in the future. The future perfect tense is often used to express achievements or work done by a future point in time. This tense is often used with the following time expressions: ... by Monday, Tuesday, etc. ... by the time ... ... by five o'clock, two-thirty, etc. Basic Construction Positive Subject + will + have + past participle + object(s) + time Expression They will have finished the report by tomorrow afternoon. Negative Subject + will not (won't) + have + past participle + object(s) + time Expression Mary won't have answered all the questions by the end of this hour. Question (Question Word) + will + subject + have + past participle + object(s) + time Expression What will you have done by the end of this month? Future Perfect Continuous Structure and Usage The future perfect continuous is used to express the duration of an action up to a future point in time. This tense is not commonly used in English. This tense is often used with the following time expressions: ... by / ... by the time ... Basic Construction Positive Subject + will + have + been + verb + ing + object(s) + time Expression We will have been studying for two hours by the time he arrives. Negative Subject + will not (won't) + have + been + verb + ing + object(s) + time Expression He won't have been working long by two o'clock. Question (Question Word) + will + subject + have + been + verb + ing + object(s) + time Expression How long will you have been working on that project by the time he arrives? Past Perfect Continuous Structure and Usage The past perfect continuous is used to describe how long an activity had been going on before something else happened. It is often used to provide context, or a reason for a specific action. This tense is often used with the following time expressions: ... for X hours, days, months, etc ... since Monday, Tuesday, etc. Basic Construction Positive Subject + had + been + verb + ing + object(s) + time Expression She had been waiting for two hours when he finally arrived. Negative Subject + had not (hadn't) + been + verb + ing + object(s) + time Expression They hadn't been working long when the boss asked them to change their focus. Question (Question Word) + had + subject + been + verb + ing + object(s) + time Expression How long had Tom been working on that project when they decided to give it to Pete? Past Perfect Structure and Usage The past perfect is used to express something that happened before another point in time. It is often used to provide context, or an explanation for a specific action or result. This tense is often used with the following time expressions: ... before already once, twice, three times, etc. ... by the time Basic Construction Positive Subject + had + past participle + object(s) + time Expression She had already eaten by the time the children came home. Negative Subject + had not (hadn't) + past participle + object(s) + time Expression They hadn't finished their homework before the teacher asked them to hand it in. Question (Question Word) + had + subject + past participle + object(s) + time Expression Where had you gone before the class began? Future Continuous Usage and Construction The future continuous is used to talk about an activity that will be in progress at a specific point in time in the future. For example, We'll be having lunch on the beach this time next week. This tense is often used with the following time expressions: ...this time tomorrow / next week, month, year ...tomorrow / Monday, Tuesday, etc. / at X o'clock ... in two, three, four, etc. / weeks, months, years time Basic Construction Positive Subject + will + be + verb + ing + object(s) + time Expression Peter will be doing his homework this time tomorrow. Negative Subject + will not (won't) + be + verb + ing + object(s) + time Expression Sharon won't be working in New York in three weeks time. Question (Question Word) + will + subject + be + verb + ing + object(s) + time Expression What will you be doing this time next year?