I think she can do it He think she can do it改为否定句 为什么

I think he can do it himself.否定句 I dont think she can do it without you,（ he think do i can it I think I can mend it.改为否定句 i think he can do the work well 和 he thinks she can do the w He can't help us do it ,I think(改为含宾语从句的复合句) I think she is right改否定句可不可以改为I do think she isn't right? I don't think i can do it ,______?与 I thing he do it_____? 改为否定句;She think it's a great trip. i don't think he can do it well at three years old,but he do I think it's very difficult.改为否定句 I can speak English 改为一般疑问 I think you can do it,it's not d___