he can't speak english .为什么speak不加s

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he can't speak english .为什么speak不加s
he can't speak english .为什么speak不加s

he can't speak english .为什么speak不加s
can't是情态动词 后面用原形

can情态动词后加动词原型

情态动词后跟动词原型

can是情态动词。妹妹

因为在can后面

单数不用加s

首先要明白can't是can not的缩写,再分清can是情态助动词,然后明白情态动词后面的动词用原形就好了,不管前面是第几人称,不过像这一类的情态动词还有 will(would),shall(should),can(could),may(might),must,need...