求need+n 的肯定句和否定句、need+to do 的肯定句和否定句、need doing 的肯定句和否定句
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求need+n 的肯定句和否定句、need+to do 的肯定句和否定句、need doing 的肯定句和否定句
1.need+n.的时候,意思和want接近:
e.g.He needs money.
It doesn't need explanation.
2.need+to do是指需要做某事,主语是动作的发出者:
e.g.He needs to clean the house.
He doesn't need to clean the house.
3.need+doing也是指需要做某事,不过主语是动作的承受着,含有被动意:
e.g.The clothes need washing.(这个形式的否定很少见)
4.此外need还可用作情态动词,用在含有must do的问句的否定回答中.
e.g.-Must I do all the exercises?
-No,you needn't.(没必要)
e.g.He needs money.
It doesn't need explanation.
2.need+to do是指需要做某事,主语是动作的发出者:
e.g.He needs to clean the house.
He doesn't need to clean the house.
3.need+doing也是指需要做某事,不过主语是动作的承受着,含有被动意:
e.g.The clothes need washing.(这个形式的否定很少见)
4.此外need还可用作情态动词,用在含有must do的问句的否定回答中.
e.g.-Must I do all the exercises?
-No,you needn't.(没必要)
求need=n 的肯定句和否定句、need=to do 的肯定句和否定句、need doing 的肯定句和否定句
求need+n 的肯定句和否定句、need+to do 的肯定句和否定句、need doing 的肯定句和否定句
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