need的具体用法我们老师和我们说don't need to do sth.,但我还是搞不清楚,求具体的need做情态动
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need的具体用法
我们老师和我们说don't need to do sth.,但我还是搞不清楚,求具体的need做情态动词和实义动词的用法和怎么区别!
我们老师和我们说don't need to do sth.,但我还是搞不清楚,求具体的need做情态动词和实义动词的用法和怎么区别!
“need”作为实义动词时,通常用法是
人+need +to do 物+need +doing 物+need +to be done 例如: The room needs cleaning = The room needs to be cleaned. 房间需要打扫了. 另外,“need”作实义动词时后还可以直接跟名词.请看下面的例子: It is a question that needs very careful consideration.这是一个需要慎重考虑的问题 很简单的方法区别情态动词与实义动词:当need为情态动词时,意思是“必要”,否定为"needn't",后面大多接动名词,表示动作; 当need为实义动词时,意思是“需要”,否定为"don't need",后面大多跟名词.
作情态动词
1.need作情态动词无人称或数的变化, 后接动词原形,多用于否定句和疑问句中.如:You needn't worry.你不必担心.
2.由need引出的一般疑问句,肯定回答常用must或have to;否定答语常用needn't. 如:
—Need I answer the question? 我需要回答那个问题吗?
—Yes, you must. /Yes, you have to.是的,你必须回答./是的,你得回答./No, you needn't.不,不必了.
3.由must引出的一般疑问句,肯定回答用must,否定答语用needn't或don't have to.如:
—Must I do the work now? 我必须现在干这个活吗?
—Yes, you must /have to.是的,你必须做./No, you needn't /don't have to. 不,你现在不必做.
人+need +to do 物+need +doing 物+need +to be done 例如: The room needs cleaning = The room needs to be cleaned. 房间需要打扫了. 另外,“need”作实义动词时后还可以直接跟名词.请看下面的例子: It is a question that needs very careful consideration.这是一个需要慎重考虑的问题 很简单的方法区别情态动词与实义动词:当need为情态动词时,意思是“必要”,否定为"needn't",后面大多接动名词,表示动作; 当need为实义动词时,意思是“需要”,否定为"don't need",后面大多跟名词.
作情态动词
1.need作情态动词无人称或数的变化, 后接动词原形,多用于否定句和疑问句中.如:You needn't worry.你不必担心.
2.由need引出的一般疑问句,肯定回答常用must或have to;否定答语常用needn't. 如:
—Need I answer the question? 我需要回答那个问题吗?
—Yes, you must. /Yes, you have to.是的,你必须回答./是的,你得回答./No, you needn't.不,不必了.
3.由must引出的一般疑问句,肯定回答用must,否定答语用needn't或don't have to.如:
—Must I do the work now? 我必须现在干这个活吗?
—Yes, you must /have to.是的,你必须做./No, you needn't /don't have to. 不,你现在不必做.
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