现在完成进行时和在完成时.pptVIP

Tip 4：现在完成时可以用表状态的动词(have)和表动作的动词(take)作谓语。而现在完成进行时只能用表动作的动词(take)作谓语。 I have had this camera for five years. I have taken photos of UFOs with this camera. √ 比较四：(state verb action verb) I have been having this camera for five years. I have been taking photos of UFOs with this camera. √ × √ State verb action verb 常用表状态、情感、感觉的动词: (1)have, exist，know，belong to等 (2)like, love，hate, believe, want, regret, prefer(更喜欢)等 (3)see，hear，smell, feel, taste等 不能用于现在完成进行时，但可用于现在完成时。 Tip 5：副词never, yet, already ,ever等可用于现在完成时，但不可用于现在完成进行时。 I have never visited Paris. I have never been visiting Paris. × √ 比较五： He has already gone to Paris. He has already been going to Paris. √ × Practice 1. She________ (lose) her keys. She can’t find them anywhere 2. I ________________(write) the book, but I still ______________(finish) it. 3. They ____ never _______(learn) to swim. 4. We ________________(look) forward to our summer vacation. has lost have been writing haven’t finished have learnt have been looking 5. Although these scientists ____ on the project for nearly four years, I dont know how long it will last. A. have been working B. have worked C. were working D. are working Practice 6. — There is so much snow these days, isnt there? — Yes, it ____ for a few days. A. was snowing B. has been snowing C. had been snowing D. snowed 7. I wonder why Jenny ______ us recently. We should have heard from her by now. A. hasn’t written B. doesn’t write C. won’t write D. hadn’t written Present perfect continuous It has been raining these days. I have been learning English since I was 8 years old and I still love it. You have been making progress and I am proud of you! The little boy has been struggling to be attentive, but can’t help falling asleep. 2. I have been learning English since I was 8 years old and I still love it. 3. Yo