need做情态动词和实义动词怎么区分?
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need做情态动词和实义动词怎么区分?
这个问题我以前答过,copy过来供你参考.
need v.
做实意动词时,有两种用法:
1.need to do sth.需要做某事
e.g I need to study hard for th exam.我需要为了考试努力学习.
He needed to drink some water.他需要喝些水.
2.need doing sth.需要被做某事(=need to be done sth.)
e.g The flowers need watering every day.花需要每天(被)浇水.
=The flowers need to be watered every day.
The classroom needs cleaning.教室需要(被)打扫.
=The classroom needs to be cleaned.
做情态动词时,通常只用疑问式或否定式.
其否定式常用于回答Must 的疑问句
e.g -Must I finish it today?
-No,you needn't
其疑问式用于构成疑问句
e.g -Need I wear a coat?
-Sure,it's cold.
下面附上上次回答的网页:
need v.
做实意动词时,有两种用法:
1.need to do sth.需要做某事
e.g I need to study hard for th exam.我需要为了考试努力学习.
He needed to drink some water.他需要喝些水.
2.need doing sth.需要被做某事(=need to be done sth.)
e.g The flowers need watering every day.花需要每天(被)浇水.
=The flowers need to be watered every day.
The classroom needs cleaning.教室需要(被)打扫.
=The classroom needs to be cleaned.
做情态动词时,通常只用疑问式或否定式.
其否定式常用于回答Must 的疑问句
e.g -Must I finish it today?
-No,you needn't
其疑问式用于构成疑问句
e.g -Need I wear a coat?
-Sure,it's cold.
下面附上上次回答的网页:
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