I don’t know why the train is late.
由连接代词who, whom, whose, what, which
和连接副词when, where, why, how引导的宾语从
句,这些连接代词和连接副词在宾语从句中充当某
个成分。
练习
She found that the wallet lay/was lying on the ground. →She found the wallet lie/lying on the ground. I don't know which sweater I should buy. →I don't know which sweater to buy. Could you tell me how I can get to the park? →Could you tell me how to get to the park?
She doesn’t know (that) she is seriously ill. I am sure (that) he will succeed.
由that引导的宾语从句,that只有语法作用, 没有实在的意义,在口语和非正式文体中可以 省略
练习
I want to know if (whether) he lives there. He asked me whether (if ) I could help him.
练习
用合适的连接词填空。
1. Jim told me ____ he didn't go fishing yesterday afternoon.(how, why) 2. Do you know _____ else is going to be on duty today?(who, whom) 3. I don't know ____ so many people are looking at him. (how, why) 4. Do you know ______ you are studying for? (why, what) 5. I really don't know ____ the bridge will be finished.(how long, how soon) 6. They don't know _______ to go or wait. (if, whether) 7. We are talking about _________ we’ll go back tomorrow. (whether, if) 8. I was really surprised at ______ I saw. (where, what)