2．运用所学短语完成片段

　　These years they are_often_caught_in (经常遭遇) sandstorms. Why? Because a lot of trees have been cut_down (砍倒). Trees do a lot of good to the environment. They take_in (吸收) carbon dioxide and give_out (放出) oxygen. In_a_nutshell (简言之), if we keep on cutting_down (砍伐) trees, sandstorms are likely to come one_after_another (一个接一个地)．

　　.重难点多练

　　1．cut相关短语点点练

　　介、副词填空

　　①Let's cut up the chicken and make some soup.

　　②Drivers who habitually cut in are bound to cause accidents sooner or later.

　　③They were almost completely cut off from the outside world.

　　④By adopting the new method, they have cut down the noise made by the machines.

　　2．look相关短语一站清

　　用look相关短语填空

　　①Please look_through your paper before you hand it in to avoid possible mistakes.

　　②I often look_up the words I don't know in the dictionary or on the Internet.

　　③The government will look_into how to reduce unemployment.

　　④Mr. Smith has taught for many years, and all the students look_up_to him.

　　⑤She looks_down_on/upon people who haven't been to college.

　　3．“so/such ... that ...”句型多棱镜

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