英语语法：“need”到底要不要和“to”在一起？
一、Need 作情态动词后面不带to，表示必要，仅用於否定句及疑问句, 或用於if及whether之後或与hardly﹑ scarcely﹑ no one等连用：
You needn't finish that work today.
你今天不必把那项工作做完.
`Need you go yet?' `No, I needn't.'
‘你一定得去吗?’‘我不必去.’
He wondered whether they need send a deposit.
他不知道他们是否得交定金.
If she wants anything, she need only ask. 她想要什麽, 只需说一声就行.
I need hardly tell you hat the work is dangerous.
无须我说你也知道那工作有危险.
Nobody need be afraid of catching the disease.
谁都不用害怕能得这种病.
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二、Need 作实义动词
后面要带to，表示需要
I didn't need to go out but I wanted a breath of fresh air.
我不一定要出去, 只想吸些新鲜空气.
A dog needs to be taken out for a walk every day.
狗得每天带出去蹓.
Will we need to show our passports?
我们要出示护照吗?
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