2014年初中八年级下册英语知识点.doc

2014年初中八年级下册英语知识点 2014年初中八年级下册英语知识点 in 介词，构成一个短词 Put on your old clothes tomorrow, because we’ll do some cleaning. Kate is wearing a red sweater today. The man in a blue suit is Mr. Li 18. 在if 引导的条件状语从句、以when , before, after , as soon as 引导的时间状语从句, 当主句是：一般将来时态、含情态动词或祈使句的情况下，从句用一般现在时表示将来时。 We’ll go hiking if it doesn’t rain tomorrow. it doesn’t rain = it isn’t rainy I’ll tell her the good news as soon as I see her. 同样的情况还适用于not ---- until 句型 I won’t go to bed until I finish my homework. 19. 在以when 引导的时间状语从句, 当从句是一般过去时态时，主句往往用过去进行时,表示在过去的某一时刻正在发生或正在进行的动作： They were having supper when I got to their home. 20. It’s time for sth / It’s time to do sth / It?s time for sb to do sth. It?s time for us to start our lesson now. 21. It takes / It took / It will take somebody some time to do something. It took them twenty minutes to finish the cleaning. It will take us about ten hours to finish our homework. 22. it 作形式主语或形式宾语，其真正的主语或宾语是后面带to 的动词不定式: It’s necessary to learn English well. We found it difficult to work out the maths problems. 23. too ---- to 句型, too ---- for sb to do sth ----，对某人来说太-----以致于不能----- The apples on the tree are too high for me to reach. Kate is too young to go to school. 24. enough 用法：形前名后， big enough ; enough food ----- enough to do sth 足够-------能够------- Jim is old enough to go to school. 25. little , a little 修饰不可数名词 ; much 修饰不可数 few a few 修饰可数名词; many 修饰可数 a little a few 具有肯定含义little few 具有否定含义 some, any , a lot of = lots of 既可以 修饰不可数，也可以修饰可数名词; There is a little time left, take it easy. We’d better go shopping ,there are few eggs left. Mr. Little doesn’t have much money. 26. much too 中心词是too, 常修饰形容词, It’s much too cold today, we should wear warm clothes. too much中心词是much, 常修饰不可数