有必要的用法和樣例：
例句
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冷靜些--沒(méi)有必要為這件事動(dòng)肝火！
Calm down there's no need to get into a lather about it!
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我知道你不喜歡我抽煙，可也沒(méi)有必要老嘮叨這事。
I know you don't like my smoking, but there's no need to go on about it.
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我覺(jué)得有必要跟你談?wù)勀羌隆?
I feel a need to talk to you about it.
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在這么短的旅程中，你實(shí)在沒(méi)有必要多買(mǎi)油。
You need not have bought extra oil for this short trip.
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他有必要到車(chē)站去接她嗎？
Need he have gone to the station to meet her?
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沒(méi)有必要煩惱，一切都會(huì )好起來(lái)的。
There is no need to get into a stew; everything will be all right.
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根本沒(méi)有必要這樣肆意夸張。
There is no need to indulge in such heroics.
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