它需要许多努力.（It takes a lot of effort)为什么不能用need非得用take,还有

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它需要许多努力.（It takes a lot of effort)为什么不能用need非得用take,还有
need什么时候做情态动词?并举例

一、need表示“需要”或“必须”,通常用于否定句,疑问句,条件句.
二、在否定句中,可以用need的否定形式+不定式完成体.
三、needn't后的不定式间或也能用进行式或被动语态.
例如：You needn't tell him.你不必告诉他.
四、其一般疑问句的答语,肯定用must,否定用needn't.
例如：—Need I do it at once?我需要立刻做它吗? —No,you needn't.不,你不必.—Need he stay here?他有必要留在这儿吗?—Yes,he must.是的,他必须留在这儿.
Need he go yesterday?昨天他有去的必要吗?
再问：什么是不定式完成体，与动词不定时有何区别
再答：动词不定式的完成体

1.

如果不定式动作是瞬间动作动词，它表示一个在现在或过去某时之前已经完成的动作；
如果是持续动作动词，它表示一个一直持续到现在或过去某时的动作。

A.

常见的可接不定式完成体的动词有：
happen / see / appear / prove / pretend / seem, etc.
He seemed to have lived a happy life.
他似乎一直过得很幸福。
（他的幸福生活一直持续到现在）

B.

常见的可用于“主语
+be said+to have done / been
”相当于主动句“
People say + that
”
结构的句型有：
be said / reported / thought / supposed /expected / believed / considered /
known
等。如：

Her husband is said to have given up smoking.
（
“戒烟”发生在“据说”之前）

The young girl is reported to have been a League member for five years.

不定式谓语动作前所处的状态

C.

常见的可接不定式完成体的形容词有
glad
/
happy
/
sad
/
disappointed
/
satisfied
/
sorry/ surprised
等

It takes sb some time to do sth.为什么take 要+s.a lot 与a lot of It[takes]them a lot of time.为什么用takes而不用pays,spends, it takes a lot of work to get there,这里的take是宾补还是及物? it takes a lot of time travelling to Beijing 不是应该take (sb.)s 为什么不能用名词It's rain 非得用形容词rainy It's dog 这都可以接名词为什么同样是名词的rain it takes a lot of luck to be successful It takes a lot of( ) to improve ones knowledg it takes a lot of practice ________ English well. it （） a lot of time.A.spend.B.take. Realx take it easy,we still have a lot of time.请问是；放松别紧张,我还有 It takes a lot of experience for a girl to kiss like a begin 英语翻译我想a lot of headaches在这里是"经常头疼"的意思,那么为什么用表示"许多"的a lot of不