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* * * * * * * * * * * * * * * * * * * * * * * * * * * * look through浏览；仔细查看(examine or read...quickly) 12. 多维训练 短语填空 look through，look down upon，look into，look out for，look up to，look up (1)You’re a popular girl，Grace，and a lot of the younger ones you. (2)He happened to the medical book Gray’s Anatomy at the time. look up to be looking through 答案 look through，look down upon，look into，look out for，look up to， look up (3) thieves when you stay there. (4)A working party has been set up the problem. (5)Terry，please from your cell phone when Grandma is talking to you. (6)I wasn’t successful，so they me. Look out for to look into look up looked down upon 答案 It’s difficult to breathe and the dust makes me ill. 呼吸困难，沙尘使我很难受。 13. 句型公式： It’s difficult to do... to breathe为不定式的主动形式表示被动意义。动词不定式的主动形式表示被动意义的几种情况： (1)主语＋be＋adj.＋不定式，常用于本句型的形容词包括：easy，hard，difficult，interesting，heavy，pleasant，comfortable，safe，dangerous，impossible，strange等。在这种句型中，当不定式与句子的主语有动宾关系且动词是不及物动词时，应该在不及物动词后加上适当的介词。 (2)have/give/show/get sth.to do，本句型中的不定式与前面的名词有动宾关系，又和句中作主语的名词或代词构成主谓关系。 (3)在“疑问词＋to do”中，不定式常用主动式。 (1)It’s difficult to learn physics well. 学好物理很难。 (2)He is easy to work with. 他很容易共事。 (3)He has a lot of work to do. 他有许多工作要做。 (1)单句语法填空 ①The question is difficult | 
