下列情况think 等词后的宾语从句的否定不能转移到主句think动词上
① think 是完成时态或完成进行时态时；
如：I have been thinking that we should not take his advice.
我一直认为我们不应该听他的话。
② think 是一般过去时或过去进行时态时；
如：We thought that this book was not worth reading.
我们认为这本书值得一读。
③ think 前有副词修饰的时候；
如：I almost think you are not my son’s teacher.
我差点认为你不是我儿子的老师。
④ think 前有do, did 等词强调时；
如：I do think that she is not pretty at all.
我确实认为她不漂亮。
⑤ think 用于一般疑问句或特殊疑问句中；
如：Do you think he will not join the Party?
你认为他不会入党吗？
Why do think we can’t beat you?
你们怎么认为我们打不赢你们呢？
⑥ 当think后的宾语从句中含有no, never, nothing, nobody等否定词时；
如：I think she may have nothing to do today.
我认为她今天没事干。
⑦ 当 think 用作插入语时；
如：Your sister ,I think, is not a friendly gay.
我认为你妹妹不太友好。
⑧ 当think后的宾语从句中含有not at all, not a little, not enough, can’t help doing 等固定词组时；如：I think you can’t help laughing when you hear the joke.
我认为你听到这个笑话时会忍不住笑的。
⑨ 当think和另一个动词构成并列谓语时；
如：I think and hope you won’t feel sad even if you lose the match.
我们认为也希望，即使您们输掉了比赛，你们也不会伤心的。
⑩ 当think用作虚拟语气的谓语had thought, 表示“本来认为……”时；
如：I had thought that he hadn’t come here.
我本来认为他不来了呢。