1. 我怀疑他是否会遵守诺言（doubt）
I doubt wether he will keep his words.
2.她帮助别人并不期待任何回报（in return）
She helps others and expects nothing in return.
3.虽然它摸起来像石头一样硬,可是加热后却很容易融化（feel/melt）
It feels as hard as stone, but melts easily if heated.
4.孩子们总是喜欢把旧钟表拆开（take apart）
Children always like to take old colks apart.
5.我决定写信给他而不是打电话（rather than）
I decided to write to rather than call him.
6.汤姆考试没及格,这让我很吃惊（非限制性定语从句）
It shocks me that Tom failed the exam.