want to do need to do do有 三单?
例如：she needs to eat rice.中的eat 不加"s"是因为need 后接动词不定式to do ( 主语是三单,故need 要加S
另外ask sb to do sth. 叫某人做某事.
如 His mother often asks him to go to school on time .
如下所述,want to do need to do do有没有三单?例如：she needs to eat rice.
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