We need _________ more exercises every day.

A. to do      B. doing         C. do

 

【答案】

A

【解析】此題考查動(dòng)詞need的用法�！靶枰眓eed 的用法 一、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。 二、作行為動(dòng)詞 need 作為行為動(dòng)詞有人稱(chēng)和數(shù)的變化， 后面可接名詞、代詞、動(dòng)名詞及帶to 的動(dòng)詞不定式；可用于肯定句、疑問(wèn)句和否定句中，如：She needs help.她需要幫助。I don't need to see the doctor.我不需要看病。—Do you need to go at once? 你需要馬上走嗎？ —Yes, I do.是的，我得馬上去。 —No, I don't.不，不用馬上走。Need后跟動(dòng)名詞時(shí)表示被動(dòng)意義相當(dāng)于need to be done。

 

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