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1、【素材】Book 4 Unit 2 Working the land重点短语讲解1. rid of 【课文原句】 Thanks to his research, the UN has more tools in the battle to rid the world of danger. (P10)【归纳】ridof【延伸】常见的一些有关的词组：be rid of 摆脱get rid of摆脱，丢弃，丢掉【易错点】rid -of -中rid后面可以跟人和物作宾语，表示“使某人/某物摆脱、 去除”Why is it hard for them to rid the research of the
2、 burde n of the Ian guage?2. would rather【课文原句】He would much rather keep time for his hobbies. （P10）【归纳】意为“宁愿、愿意”，后接不带to的动词不定式或宾语从句。would rather do than do would do rather tha n do 【注意】接宾语从句时，从句谓语动词经常使用虚拟语气，即用did / were或had done / been形式，表示与事实相反的一种愿望。I like to go camping in the mountain, while my fr
3、iend would rather go sightseeing.Id rather my brother didn go abroad.（虚拟语气，事实与我现在的愿望相反）I rather my brother hadn gone abroad.（虚拟语气，事实与我过去的愿望相反）3. build up【课文原句】 These chemicals in the food supply build up in people s bodies over time.(P14)【归纳】build up (1) vt.建立开发The movie compa ny has done so much to
4、 build up its honor since last year.vt.提高，加强She does exercise everyday to build up her body.【延伸】常见的一些有关的词组：build on (在原有建筑上)增建某物【易错点】build up (to sth)增大、加强(到)build (on eself) up to sth 为做准备4. lead to【课文原句】 Many of these chemicals can lead to can cer or other ill ness. (P14)【归纳】lead to (1)通向The path
5、leads to the small village n ear the famous lake.(2)lead to相当于result from表“结果为；导致”。It s his careless driving that led to the terrible accident.The plan without enough consideration may lead to disaster.【延伸】lead中的to是介词，后面跟名词或动名词。常见的to是介词的词组有:devote to把.用于，致力于con tribute to捐献捐赠；投稿；是的原因be used to 习惯于lead sb to sth表“引导，使得出（观点）”。
