Do you like English? Do they know your name?用除第三人称单数之外的人称
Does he know you ? Does she speak English ?第三人称单数一般现在时用
Let him go . Let's go home . let Sb. do 这里Sb不用第二人称
We can help you .You can do it well .can没有人称的变化
do,does,let,can后面动词原形句子,有那个老师帮我各写二句好吗?