1.引导词

(1) that引导宾语从句时，通常用陈述句充当, that可省略。She said,“I want to go there ”She said (that) she wanted to go there.(2) whether 或 if 引导的宾语从句,由一般疑问句/选择疑问句充当，陈述语序。“Are you interested in geography?” she said.She asked if/whether I was interested in geography.I wonder if /whether she has told the new to Li Lei .I’m not sure whether he will come or not.注意：一般情况下，whether 和if 可以互用， 但有些情况例外We are talking about whether we'll go on the panic.b. 引导词与动词不定式或or not 连用时，只用whether.eg:I can’t say whether or not he will come on timec.if当如果讲时,引导的是条件状语从句，表示‘如果’，不能用whether.If you want to be a good teacher, it will take times.Whether you can succeed depends on how much effort you pay.(3).特殊疑问词引导宾语从句时，不可省略，陈述句语序。特殊疑问词为：how , when, where, why ,which whose.‘What do you want?’ He asked.He asked me what I wanted.I have no idea where he is now. I don’t know how to deal with it.

He asked whose handwriting is the best in the class.