否定句 怎么变的?否定句怎么变啊 我看书上都没有
1个回答
否定句的变化需根据不同的句式考虑,通常有以下几点：
1.陈述句的否定形式通常使用特殊动词（助动词和情态动词）带否定词not表示,变化方式为：找出句中的
特殊动词,在其后加not;如句中无特殊动词,则根据谓语动词形式,在谓语动词前加don't（原谓语动词为原型）, doesn't（原谓语动词为-s形式）或didn't（原谓语动词为过去式）,谓语动词都用原型.
如：He can speak English. ---- He can't(can not) speak English.
She went to the movie last night.---- She didn't go to the movie last night.
2.祈使句的否定形式通常在其句首加Don't.
如：Sit over there.---- Don't sit over there.
注：let's引导的祈使句的否定形式在let's后加not
如：Let's go swimming.---- Let's not go swimming.
