作者：劉文茜
1.［原句再現(xiàn)］You are good at talking to people. 你擅長與人交談。
［要點解析］be good at 意為"在......方面做(學)得好；擅長于......"其中at 是介詞，所以be good at后面要跟V-ing形式。
［知識拓展］be good at 后還可跟名詞或代詞。例如：
Irfan is good at football. 伊凡擅長踢足球。
［特別提示］be good at = do well in，因此上面所出現(xiàn)的句子可依次替換為：
①You do well in talking to people.
② Irfan does well in football.
2. ［原句再現(xiàn)］ I want to help the people who are sick. 我想要幫助那些生病的人。
［要點解析］want后跟動詞不定式，意為"想要做某事"。
［知識拓展］want后還可直接跟名詞或代詞。例如：
I want the book. He wants it, too. 我想要這本書，他也想要。
［特別提示］want = would like, 因此上面所出現(xiàn)的句子可依次替換為：
① I would like to help the people who are sick.
② I would like the book. He would like it, too.
3. ［原句再現(xiàn)］ I hope to have a great family when I'm older. 我希望當我成年時，我能擁有一個大家庭。
［要點解析］hope后面跟動詞不定式，意為"希望做某事"。
［知識拓展］hope后面還可跟that引導的賓語從句，that可省略。因此I hope to have a great family when I'm older. 可說成：
I hope (that) I can have a great family when I'm older.
［特別提示］"hope to do"形式不能隨便使用。只有當主句的主語與從句的主語相同時，才可使用"hope to do"形式。