当need作情态动词时,怎么用

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/03 05:27:39
当need作情态动词时,怎么用
xTN@骭n#lҐ["v#m!I;$EBS&<ʿg$ RyfνsfnhzWuN=αW^ᛧNy]+FBx'Jr|Ew,us,R^kmHT,{J99`Rf {0oN+@_xDWt?W.i%-,EWu-uج{B*`X͗)86GV F P-LDN߹pCWoDKm1$+lk5@0tTb#$+/}l,t "_@fC"ZeOd$/En֩,{4J`NYX(uVW8l:r)T$h40N mZσhP1NUpN1žS=u7 =>R"1MLe ?>hFn"D4V&+}bJ?):"$d*nB64YSσyRv ab$fUst֏;J`T8M&*˻#v#M7 r-y:+˔pExo^"AfL d2M mwLtbɈ'y݌`0A8u_uň\3p[KU,_=)fI^x>TO钛^&yVAumGh u0,eb<>jPwoxǫ+DB`%\z'O!KX&Y+N 9D5ک!;{һ

当need作情态动词时,怎么用
当need作情态动词时,怎么用

当need作情态动词时,怎么用
need作情态动词时,没有人称、数、以及时态的变化,且通常用于否定句和疑问句中.

1. need表示“需要”或“必须”,作情态动词时,仅用于否定句或疑问句中,在肯定句中一般用must, have to, ought to,或should代替。如:   You needn’t come so early.   — Need I finish the work today?   — Yes, you must.   注意:needn't + 不定式的完成式“表示本来不必做某事而实际...

全部展开

1. need表示“需要”或“必须”,作情态动词时,仅用于否定句或疑问句中,在肯定句中一般用must, have to, ought to,或should代替。如:   You needn’t come so early.   — Need I finish the work today?   — Yes, you must.   注意:needn't + 不定式的完成式“表示本来不必做某事而实际上做了某事”。如:   You needn't have waited for me.   2. Dare作情态动词时,主要用于疑问句、否定句和条件从句中,一般不用在肯定句中。如:   How dare you say I'm unfair.   He daren't speak English before such a crowd, dare he?   3. Dare和need常用作实义动词,有时态、人称和数的变化,所不同的是,作实义动词时,在肯定句中,dare后面通常接带to的不定式,在否定和疑问句中,dare后面可接带to或不带to的不定式。如:   I dare to swim across this river.   He does not dare (to) answer.   Don't you dare (to) touch it!   I wondered he dare (to) say that.   He needs to finish it this evening. 实义动词:及物动词(带宾语);不及物动词(不带宾语)。  实义动词意思完全,能独立用作谓语。实义动词有及物动词和不及物动词(及物动词是指后面要求有直接宾语的动词;不及物动词指后面不需要跟宾语的动词

收起

need +V原形