一、简单句中，动词多是转移动词： (1) I’m going. 我要走了。 (2) I'm coming.我要来了。 (3) When are you starting? 你什么时候动身？ 特例：亦可用于某些非转移动词： (1) I’m meeting you after class. 课后我找你。 (2) What are you doing next Sunday? 下星期你打算干什么？ (3) She is buying a new bike soon. 她不久将买一辆新自行车。 go, come, leave, start, arrive, give, return, sleep ,stay, play, do, take, get, see off, travel, fly, drive, walk, reach, meet-----初高中就这些词，记住也差不多了 二、时间状语或条件状语从句中： (1) when you are passing my way, please drop in. 你什么时候路过我们家，请进来坐。（用于时间状语从句） (2) If they are not doing it, what am I to do? 如果他们不干，那我该怎么办？（用于条件状语从句） (3) She is going to the dentist tomorrow because she is having a tooth filled. 她明天要去看牙医，因为她要补牙。（原因状语从句）--------------少，主要是前两种 1. Ladies and gentlemen, please fasten your seat belts. The plane_____. (2006全国高考题) A. takes off B. is taking off C. has taken off D. took off 2. —Are you still busy? (2005年浙江卷) —Yes, I______ my work, and it won’t take long. A. just finish B. am just finishing C. have just finished D. am just going to finish 3. My uncle _____ to see me. He'll be here soon. A. comes B. is coming C. had come D. Came 4. ---I’m going to the States. ---How long ___ you___ in the States? A. are; stayed B. are; staying C. have; stayed D. did; stay 5. I’ve won a holiday for two weeks to Florida. I ____ my mum. A. am taking B. have taken C. take D. will have taken 6. Because the shop ____, all the T-shirts are sold at half prices. A. has closed down B. closed down C. is closing down D. had closed down 7. --- Can I join the club, Dad? --- You can when you ___ a bit old. A.get B. will get C. are getting D. will have got 本文来源：https://www.wddqw.com/doc/29f3f91aa76e58fafab0030a.html