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1、归纳起来, do ,does 的用法有四方面: 一.用作一般的动词,vt.vi均可.do是一不规则变化的动词(do ,did,done). do,据人称和单复数的不同而有字形的变化.第一第二人称,以及第一.二.三 人称的复数时,都用 do . 第三人称单数时,用 does( he does she does it does ) 例如: I do my homework on Sunday. You do your homework on Sunday. We do our homework on Sunday. You do your homework on Sunday. They do t
2、heir homeworkon Sunday. He does his homework on Sunday. She does her homework on Sunday. 二.当助动词用,用它来构成疑问句.这时它本身没有实义,只是一个构成疑问句的符号而已.这种用法时,它随人称和数的变化规则与上述相同.只是把它放到句子的最前面(句首).例如: Do I .? Do you .? Do we .? Do you .? Do they .? Does he .? Does she .? Does it .? 三.当助动词用,与 not 连用使句子构成否定句.其随人称和数的变化规则与上述相同.例
3、如: I do not .? (do not 可简化为 dont ,下同) You do not .? We do not.? You do not.? They do not.? He does not.? (does 可简化为 doesnt,下同) She does not.?四.当作助动词,本身在句子中无实义,只是加强句子中动词的语气.其随人称和数的变化同上.例如: Do write to me.(一定写信给我!) Never do I see such a fool.(我从来没见过这样的蠢才.) She does come.(她的确来了.) * * * * * * 按词性, do 还可以用作名词.其意是欺骗;宴会,宴请.例如: Its all a do.(完全是欺骗.) We have got a do on to-night.(家里今晚请客.)
