need的用法
need作為實(shí)義動(dòng)詞
人+need+to do物+need+doing物+need+to be done,
例如:
The room needs cleaning=The room needs to be cleaned. 房間需要打掃了.
另外,“need”作實(shí)義動(dòng)詞時(shí)后還可以直接跟名詞。
It is a question that needs very careful consideration.這是一個(gè)需要慎重考慮的問(wèn)題
很簡(jiǎn)單的.方法區(qū)別情態(tài)動(dòng)詞與實(shí)義動(dòng)詞:當(dāng)need為情態(tài)動(dòng)詞時(shí),意思是“必要”,否定為"needn't",后面大多接動(dòng)名詞,表示動(dòng)作; 當(dāng)need為實(shí)義動(dòng)詞時(shí),意思是“需要”,否定為"don't need",后面大多跟名詞。
need作情態(tài)動(dòng)詞
1、need作情態(tài)動(dòng)詞無(wú)人稱(chēng)或數(shù)的變化,后接動(dòng)詞原形,多用于否定句和疑問(wèn)句中。如:You needn't worry.你不必?fù)?dān)心。
2、由need引出的一般疑問(wèn)句,肯定回答常用must或have to;否定答語(yǔ)常用needn't。如:
―Need I answer the question? 我需要回答那個(gè)問(wèn)題嗎?
―Yes, you must. /Yes, you have to.是的,你必須回答。/是的,你得回答。/No, you needn't.不,不必了。
3、由must引出的一般疑問(wèn)句,肯定回答用must,否定答語(yǔ)用needn't或don't have to。如:
―Must I do the work now? 我必須現(xiàn)在干這個(gè)活嗎?
―Yes, you must /have to.是的,你必須做。/No, you needn't /don't have to. 不。你現(xiàn)在不必做。