i think teenagers should be encouraged to do some

i think teenagers should be encouraged to do some social work 变为否定句

i think teenagers should be encouraged to do some social work
我认为应该鼓励青少年做一些社会工作

否定句：
I don't think it should be encouraged to do some social work.
我认为不应该鼓励青少年做一些社会工作

我认为青少年应该被鼓励去做社会工作

你好！ i think teenagers should be encouraged to do some social work 变为否定句 i think teenagers shouldn't be encouraged to do some social work 如有疑问，请追问。

当原句中出现有如think，believe，suppose等词时，改为否定句要注意否定转移，把否定词not加在think等词的后边，所以这句话的否定应为I don't think teenagers should be encouraged to do some social work.精锐金桥，望采纳，谢谢。