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【篇一】2020年9月英語四級語法用法辨析
would rather表示"寧愿"
would rather do
would rather not do
would 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 rather than go home.
典型例題
----Shall we go skating or stay at home?
----Which ___ do?
A. do you rather B. would you rather C. will you rather D. should you rather
答案B。本題考查情態(tài)動詞rather的用法，would rather +do sth 意為"寧愿"，本題為疑問句，would 提前，所以選B。
【篇二】2020年9月英語四級語法用法辨析
比較need和dare
這兩詞既可做實(shí)義動詞用，又可做情態(tài)動詞用。作為情態(tài)動詞，兩者都只能用于疑問句，否定句和條件句。 need 作實(shí)義動詞時后面的不定式必須帶to，而dare作實(shí)義動詞用時, 后面的to 時常可以被省略。
1) 實(shí)義動詞： need (需要, 要求)
need + n. / to do sth
2) 情態(tài)動詞： need，只用原形need后加do，否定形式為need not。
Need you go yet?
Yes, I must. / No, I needn't.
3) need 的被動含義：need, want, require, worth(形容詞)后面接doing也可以表示被動：
need doing = need to be done
【篇三】2020年9月英語四級語法用法辨析
帶to 的情態(tài)動詞
帶to 的情態(tài)動詞有四個：ought to, have to, used to, be to, 如加上have got to ,(=must), be able to，為六個。它們的疑問，否定形式應(yīng)予以注意：
Do they have to pay their bill before the end of the month?
She didn't use to play tennis before she was fourteen.
You ought not to have told her all about it.
Ought he to see a heart specialist at once.?
ought to 本身作為情態(tài)動詞使用。其他的詞作為實(shí)義動詞使用，變疑問，否定時，須有do 等助動詞協(xié)助。
典型例題
Tom ought not to ___ me your secret, but he meant no harm.
A.have told B.tell C.be telling D. having told
答案A。由于后句為過去時，告訴秘密的動作又發(fā)生在其前因，此地應(yīng)用過去完成時，但它在情態(tài)動詞 ought to 后，所以用have。
【篇一】2020年9月英語四級語法用法辨析
would rather表示"寧愿"
would rather do
would rather not do
would 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 rather than go home.
典型例題
----Shall we go skating or stay at home?
----Which ___ do?
A. do you rather B. would you rather C. will you rather D. should you rather
答案B。本題考查情態(tài)動詞rather的用法，would rather +do sth 意為"寧愿"，本題為疑問句，would 提前，所以選B。
【篇二】2020年9月英語四級語法用法辨析
比較need和dare
這兩詞既可做實(shí)義動詞用，又可做情態(tài)動詞用。作為情態(tài)動詞，兩者都只能用于疑問句，否定句和條件句。 need 作實(shí)義動詞時后面的不定式必須帶to，而dare作實(shí)義動詞用時, 后面的to 時常可以被省略。
1) 實(shí)義動詞： need (需要, 要求)
need + n. / to do sth
2) 情態(tài)動詞： need，只用原形need后加do，否定形式為need not。
Need you go yet?
Yes, I must. / No, I needn't.
3) need 的被動含義：need, want, require, worth(形容詞)后面接doing也可以表示被動：
need doing = need to be done
【篇三】2020年9月英語四級語法用法辨析
帶to 的情態(tài)動詞
帶to 的情態(tài)動詞有四個：ought to, have to, used to, be to, 如加上have got to ,(=must), be able to，為六個。它們的疑問，否定形式應(yīng)予以注意：
Do they have to pay their bill before the end of the month?
She didn't use to play tennis before she was fourteen.
You ought not to have told her all about it.
Ought he to see a heart specialist at once.?
ought to 本身作為情態(tài)動詞使用。其他的詞作為實(shí)義動詞使用，變疑問，否定時，須有do 等助動詞協(xié)助。
典型例題
Tom ought not to ___ me your secret, but he meant no harm.
A.have told B.tell C.be telling D. having told
答案A。由于后句為過去時，告訴秘密的動作又發(fā)生在其前因，此地應(yīng)用過去完成時，但它在情態(tài)動詞 ought to 后，所以用have。