If Jack arrive.Let him come in如题

If Jack arrive.Let him come in如题 let him come in.变否定句 让他进来,是let him in 还是let him come in 或是 let him be in 请问let him in和let him come in一样吗? Don't let him come in中him不用主格形式是不是因为它不是主语? Why hasn't jim come yet?If he doesn't arrive in five minutes Let's wait for him _______ he _______ back A．if,will come B． If you love him,let him go. Let them__ (come) in Let __________ come in. arrive in 和come in 的区别 If anything____to him in the coming summer camp,please let m