作业帮英语need实义动词于情态动词的用法和结构,请说明白点
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英语need实义动词于情态动词的用法和结构,请说明白点
英语need实义动词于情态动词的用法和结构,请说明白点
英语need实义动词于情态动词的用法和结构,请说明白点
need实义动词：need to do sth .有人称变化.例如：he needs an apple .变否定：don't或doesn't.一般疑问：把do/does提到前面就ok例如：does he need an apple
need 情态动词：和can的用法基本一样只是回答不一样,need的回答：肯定回答：you (must必须）否定回答：no,i need .一般疑问：例如：need he go home
行为 need 情态need
He needs to get up early. ....(不用于肯定句/陈述句中，无此表达。）
He doesn't need to get up early. = He needn't g...
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行为 need 情态need
He needs to get up early. ....(不用于肯定句/陈述句中，无此表达。）
He doesn't need to get up early. = He needn't get up early.
Does he need to get up early? = Need he get up early?
Yes, he does./No, he doesn't. Yes, he must./ No, he needn't= No, he don't have to.
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need 作实义动词时，就是“需要”的意思，一般是need to do sth, needn't to do sth ,当它做情态动词时，用法与其他情态动词一样，如can