现在完成时讲义与练习MicrosoftWord文档.doc

现在完成时讲义现在完成时1 与过去时的区别（1） 过去时只表示过去，不能代表现在（2） 现在完成时表示发生在过去并持续到现在或影响现在2 标志（1） already，yet, ever, never, since, for, just, recently,（2） over the (past) years, over/in/during the past 20 years, so far, up to now, by now 3 结构have/ has + pp(过去分词)4 注意点（1） already(已经)，用于肯定句， yet(已经，还)用于否定句和疑问句， ever一般用于疑问句，有时用于肯定句（2） since，for用于动作持续了多长时间，动词必须是持续性动词5 非持续性动词（过去时）与持续性动词（现在完成时）的替换（1） buy-have/has had（2） borrow-have/has kept（3） go to /come to-have/has been in （at）（4） arrive in /at-have/has been in （at）（5） leave-have/ has been away （from）（6） die-have/has been dead（7） join- have/has been in（have/has been a member of ）（8） begin/start-have/ has been on（9） stop/ finish/end-have/has been over（10） get married-have/has been married （11） open-have/has keptopen（12） closehave/has keptclosed（13） turn on-have/has kepton（14） turn offhave/has keptoff（15） fall asleep-have/has been asleep6 过去分词（1） 规则动词的过去分词A +edB 以辅音字母+y为结尾，改y为-iedC clap-clapped， shop-shopped， stop-stopped，plan-planned，chat-chatted， travel-travelled，step-stepped（2） 不规则动词的过去分词（重点记忆）begin-began，begun； bring-brought，broughtbuild-built，built； buy-bought，boughtchoose-chose，chosen； think-thought，thoughtdo- did- done catch-caught-caughtgo- went- gone teach-taught-taughtdraw- drew- drawn grow- grew- growndrive- drove- driven eat-ate-eatenfall- fell-fallen fly- flew- flownfeel-felt- felt hear- heard- heardgive- gave- given hold- held- heldkeep- kept- kept know- knew- knownleave- left- left lose-lost-lostmake-made-made； take-took- takensee- saw- seen write- wrote- writtenshow- showed- shown speak-spoke- spoken say-said-said sell-sold- soldtell-told-told spend-spent-spentforget-forgot-forgotten break-broke-broken 现在完成时 专项训练一、用所给动词适当形式填空1. He fell asleep while he_ (watch) TV last night.2. You are here. I thought you_ (be) in Beijing.3. Where is your father? He _ (go) to Hong Kong.4. Where is Tom? H _ (repair) his chair there.5. I _ (not see) you for some time.6. In the past 10 years, I _(fly) to Shanghai only once.7. _you ever _(fall) into a river?8. Jane _(not write) to me recently.9. The changes to my hometown _(bring) us many advantages now.10. My school bag isnt here. I_ (leave) it at home. 二、句型转换 1. They have already finished their homework.(否定句) 2. Hes never been late for school.(反意疑问句) 3. They have lived here since ten years ago .(对划线部分提问) 4. The film started at 2 oclock this afternoon.(同义句)5. My father borrowed a magazine last week.6. Tony left his hometown ten years ago.7. The teacher turned on the recorder this morning.8.