一般现在时的句子结构 1、当句子表状态说明主语是什么或怎么样时,其句型:主+BE动词(am,is,are)+表语,否定式是在BE动词后加not,疑问句是将BE动词提前到句首(即在主语之前) e.g.The twin sisters are from America.这对孪生姐妹是美国人. The twin sisters are not from America. Are the twins from America? 2、当谓语由实义动词充当,主语不是第三人称单数时, 句子结构为:主语+动词原形+其它 否定式为:主语+don't+动词原形+其它 疑问句为:Do+主语+动词原形+其它? e.g.We speak Chinese. Do you speak Chinese? They don't speak Chinese. 当主语是第三人称单数时: 句子结构为 主语+动词(词尾加s或es)+其它. 否定式为:主语+doesn't+动词原形+其它. 疑问句式:Does+主语+动词原形+其它? |
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