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1、英语常用时态分辨：时 态结 构要 求典型时间状语一般现在时态动词原形主语 + 动词第三人称be动词谓语动词有人称和数的变化always, usually, sometimes, often, every day/week/month/year 等一般过去时态主语 + 动词的过去式谓语动词没有人称和数的 变化yesterday; in+过去的时间; ago; just now; last (night, week, month, year) 等一般将来时态主语 + will dobe going to do动词原形前有将来时态的 标志，且不能丢。tomorrow, next week/month
2、/year; in +将来的时间 等现在进行时态主语 + be +doing 1. 有人称和数的变化2. be +doing两者缺一不可now, look, listen, at the moment, right now等现在完成时态主语+have/has+动词的过去分词1. 谓语动词有人称和数的 变化; 2. have/has 和动词的过去分词两者缺一不可already, just, yet, ever, never, since（接时间点）, for(接一段时间)，现在完成时态练习一、用所给动词的正确形式填空;1. they ( take ) a lot of photos of you
3、? No, not yet. 2. She ( not meet ) me for a long time. 3. How long you ( be ) in London ?4. I already ( see ) the film, I ( see ) it last week. 5. His father ( go ) to New York on business. 6. We _( study ) in Little Star English since two years ago.7. They _ (study) English for a long time.8. The c
4、hildren _ (enjoy) themselves in the party last Sunday morning.9. My father _ (read) the novel twice.10. The door is open. Who _ (open) it? Do you know? Sorry, I dont know.11. She _(buy) a Hello Kitty for you , hasnt she? Yes, she _. She _(buy) it in Shanghai last summer. 12. Are you sure you_(lose)
5、your dictionary? Yes, I _(look) for it everywhere , but I still cant find it.三、句型转换：1. I have fed the fish . （改为疑问句） 2. She has been to Beijing. （改为疑问句并作否定回答） 3. My brother has visited a toy museum. （改为否定句） 4. Uncle Tom has been here for five days. （对画线部分提问） 5. I have eaten fish and chips. （改为否定句） 6
6、. They have bought a computer.(改成否定句)_7. He has lost his book. (先改成一般疑问句,再作肯定与否定回答)_8. Miss Brown has taught physics for 15 years.( 改为一般疑问句句，并作肯定回答）_9. He has planted some trees in front of his house._9. Daniel has collected some Chinese stamps._10. The two Australian teachers have visited that village twice._11. Millie hasnt come because he is ill._12.She will be back in two days.(用for two days 改写)_