don"t let him do that again这个句型对吗?是不是应该说成don"t let him does that again?

again,that,him,don’t,do,let.连词组句 dont let him do that again这个句型对吗?是不是应该说成dont let him does that again? i don't know what to do to let him love me.i love him .but he don't know Don't do the homework for him.Let him___(do) it ___(he). Don't let him have supper . 请教let's don't tell him请问not前面为什么不能加do you don't need to help him p---the banana .He's old e----.let him do it himself Don't let it do your homework. Do not let me lonely because I need you!I don't like listening you say anything about him let's not believe him不要相信他,不是don't believe 而上面为什么不用加助动词“do了? Don't worry.Let him ____(help) you find it. let's don't worry about him错哪了 If you do find that someone ____,hold on to him forever and don't let him goA.powerful B.rich C.honest D.special let him do the Don't let it do your homewolk.是什么意思? 有没有Don't let us do sth.的表达 please _______(not do) your homework like that let him _____(clean)the blackboard todayi don't know what ______(wear) for the birthday party I don't know about him ,( )comment on him behind his back.A.let along B.let go 为什么?