1.I think he is right.（否定句） 2.I am from Americe.(一般疑问句) 3.Throw it like this.(否定句)
问题描述：
1.I think he is right.（否定句） 2.I am from Americe.(一般疑问句) 3.Throw it like this.(否定句)
4.You must go to bed early.(祈使句)
5.I can see some desks in the classroom.(一般疑问句)
6.We should keep our classroom clean.(否定句)
答
1.I don't think he is right.2.Are you from America?3.Don't throw it like this.4.Go to bed early.5.Can you see some desks in the classroom?6.We shouldn't keep our classroom clean.