be necessary to對…來說是必要的；對…有必要
it may not be necessary to you： 也許對你來說沒必要
be necessary for sb. to do sth.： 對某人來說做某事是必要的
It should hardly be necessary to say more.
到此已經(jīng)不用再說什么了.
In my opinion, it may be necessary to charge for participation.
我的意見是有必要讓參加者付些費用.
be necessary for對……有必要
be necessary for sb： 對某人來說是很需要的
be necessary for sb to do ..： 對…來說有必要
But I'm afraid that it will be necessary for us to ask you to change rooms for the last two nights：
I think that the on-site training will be necessary for the tank.
我想槽罐焊接工作的現(xiàn)場培訓是必要的.
Would it be necessary for me to pay all the money before the trip?
我必須在旅行出發(fā)前支付全部費用嗎?
Battlefield information for one squad may not be necessary for other squads.
針對一個小組的戰(zhàn)場情報未必是別的小組所需要的.
后面常加名詞.
其實,記住這個就完了.
be necessary for sb to do ..： 對…來說有必要