would rather表示寧愿had better表示最好 must表示推測

1、would rather表示寧愿，had better表示最好， must表示推測 would rather表示寧愿would rather dowould rather not dowould rather than 寧愿而不愿。還有would sooner, had rather, had sooner都表示寧愿、寧可的意思。If I have a choice, I had sooner not continue my studies at this school.I would rather stay here than go home. = I would stay here rat

2、her than go home.看看這道考題是如何用語法證明所選是正確的選項Shall we go skating or stay at home?Which _ do?A. do you ratherB. would you rather C. will you rather D. should you rather答案B。此題考察情態(tài)動詞rather的用法，would rather +do sth 意為寧愿，此題為疑問句，would 提早，所以選B。had better表示最好had better 相當于一個助動詞，它只有一種形式，它后面要跟動詞原形。had better do sthh

3、ad better not do sthIt is pretty cold. You'd better put on my coat.She'd better not play with the dog.had better have done sth表示與事實相反的結(jié)果，意為本來最好。You had better have come earlier.must表示推測1. must用在肯定句中表示較有把握的推測，意為一定。2. must表對如今的狀態(tài)或如今正發(fā)生的事情的推測時， must 后面通常接系動詞be 的原形或行為動詞的進展式。You have worked hard

4、all day.You must be tired. 你辛苦干一整天，一定累了。對如今情況的推測判斷He must be working in his office. 他一定在辦公室工作呢。比較：He must be staying there.他如今肯定呆在那里。He must stay there.他必須呆在那。3. must 表示對已發(fā)生的事情的推測時，must 要接完成式。 I didn't hear the phone. I must have been asleep.我剛剛沒有聽到 ，我想必是睡著了。4. must表示對過去某時正發(fā)生的事情的推測，must 后面要接不定式的完成進展式。Why didn't you answer my phone call?Well, I must have been sleeping, so I didn't hear it.5. 否認推測用can't。 If Tom didn't leave here until