摘要:3. 由if或whether引导.说明该从句是一个一般疑问句.在句中的实际意思是“是否 . 例如:He asked me if / whether I was a doctor. We wondered if / whether we should have a test tomorrow.

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Hong Kong has about forty public beaches. Some of the beaches are among the best in the world. People can go there for a swim. You can go to most of them by bus. But to go to some beaches you must take a boat. There are toilets, dressing rooms and places to buy food and drinks on most of the beaches.

You will swim there without danger if you remember these instructions(说明):

1. Never swim alone.

2. Never swim after a meal or when you feel hungry or tired.

3. Don’t stay in the water too long.

4. Never go out in a boat if you can’t swim.

Remember: A red flag means that it is dangerous for anyone to go into the water. A blue flag means that it is dangerous for children.

1.There are _________public beaches in Hong Kong.

A.forty                                 B.a little more or less than forty

C.less than forty                          D.more than forty

2.We can reach __________by bus.

A.all the public beaches                    B.no public beach

C.only a few public beaches                 D.most of the public beaches

3.When you see a blue flag, you know that _________there.

A.women should not swim                  B.children should not swim

C.nobody can swim                       D.men should not swim

 

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—Do you think _____ Xiao Ming can pass the high school entrance exam or not?

—Sorry, I’ve no idea.

  A. that       B. which       C. if        D. whether

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They wonder________robots will make humans lose their jobs or not

A. that                   B. if                   C. whether

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