Tom+can+finish+his+job 改为否定句?
否定句是 Tom can't/can not finish his job.(汤姆不能完成他的工作。)
一、解析
首先改否定句要找原句有没有情态动词和be动词,这句话有情态动词 can,所以否定句在情态动词 can后面加入not ,即can't( can not ),所以否定句是
Tom can't/can not finish his job.(汤姆不能完成他的工作。)
二、拓展——否定句变句思路
(1)有 be ,be后面加 not
例一: He is my teacher .(他是我的老师)
这句话里面有be 动词 is,否定句在 be 动词 is 后面加not,is not 可以完整写,也可以缩写为 isn't
即 否定句:He is not / isn't my teacher .(他不是我的老师。)
(2) 有 can,can后面加 not
例二: She can sing .(她会唱歌,)
这句话里面有情态动词 can,所以否定句在can 后面加 not ,can not 可以完整写,也可以缩写为 can't
即 否定句:She can not / can't sing .(她不会跳舞。)
(3)无 be 无 can找实意动词,前面加don't 或 doesn't,此时动词需要还原
例三: She wants to play football.(她想踢足球。)
根据 wants判断句子一般现在时,并且第三人称单数,所以实意动词 wants 前面加入找动词 doesn’t ,动词还原为want
即 She doesn't want to play football.
(4) and 变成 or,some 变成 any 。
这句话有情态动词 can,所以否定句在情态动词 can后面加入not ,即 can't( can not ),所以否定句是
Tom can't/can not finish his job.(汤姆不能完成他的工作。)
三、拓展训练——把下列句子改为否定句
My mother can dance.
否定句:My mother can't/can not dance.
She likes singing.
否定句:She doesn't/does not like singing.
Tom+can+finish+his+job 改为否定句?
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Tom can't finish his job.
勤学好问 天天进步! 开心快乐每一天!
Tom+can't/ cannot+finish+his+job.
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