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重点讲解：
1. come in handy
派上用场；
eg. That key will come in handy if you lock yourself out.
要是你把自己锁在了屋外，那把钥匙就派上用场了。
eg. The $20 check came in very handy.
那张20美元的支票正好派上了用场。
2. in so far as
在…的范围内；到…的程度；只要；
eg. You are qualified in so far as you don't cause problems.
就你不会制造麻烦而言，你是合格的。
eg. He can be trusted in so far as he has never yet told a lie.
他是可以信任的，因为他从未说过谎。
3. concentrate on
全神贯注；集中（心思）；
eg. You should concentrate on the road when you're driving.
开车时注意力应集中在路上。
eg. Clock watchers can never concentrate on their work.
老是看时间等下班的人决不会专心致志地工作。
4. throw up
呕吐；呕出；
eg. This smell is enough to make you throw up.
这种气味令人呕吐。
eg. If you are going to throw up, be sure to do it in the sick bag.
如果您想吐的话，一定要吐到呕吐袋里。
5. fall into place
（情况）豁然开朗；（事件等）自然而然地按所希望的方式发生；
eg. Once the decision was made, things fell into place rapidly.
一旦作出决定，事情就立刻顺理成章地发展下去了。
eg. When the reasons behind the decision were explained, of course, it all fell into place.
当然，在这一决定背后的原因得到解释之后，一切就变得
