need to do 、need do我知道前者是实意动词,后者是情态动词,可是在用法上有什么明显的区别呢,
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need to do 、need do我知道前者是实意动词,后者是情态动词,可是在用法上有什么明显的区别呢,
need 作情态动词时一般用于否定句和疑问句中.
肯定句一般用作实意动词.
例如:
We need to wear warm clothes in winter.(实意动词)
You needn't finish your homework now.(情态动词)
Need he run so fast?No,he needn't .(情态动词)
就是情态动词与实义动词的区别
用法上的区别就是need to do ,need是实意动词,否定和疑问得需要助动词。 如 He needs to come her early, doesn't he? He doesn't need to come early. Does he need to come early?
但是need do , need 是情态动词,常用于否定句和疑问句, 可以直接加Not否定...
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用法上的区别就是need to do ,need是实意动词,否定和疑问得需要助动词。 如 He needs to come her early, doesn't he? He doesn't need to come early. Does he need to come early?
但是need do , need 是情态动词,常用于否定句和疑问句, 可以直接加Not否定,也可以直接用来提问。
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