I am afraid that 后面加从句
例如 I am afraid that you are right.
我恐怕你是对的.
I am afraid not.是一个完整的句子.
例如:-Do you think it is going to rain?
-I am afraid not.
你认为天将要下雨吗?
我恐怕不是(这样)的.(即否定)
I am afraid that 后接一个表语从句,描述恐怕的内容。翻译为恐怕。。。
I am afraid not 通常是一个完整的句子,后面不接任何内容,表示“恐怕不是/不行”,用来拒绝他人的提议或劝诱。e.g. -Can I smoke here? -I'm afraid not.