初中英语人教版八年级下册Unit 2Grammar写作预习指导（知识点+练习题）

1、八年级英语下册Unit 2Grammar写作预习指导一、知识点一、语法（一）can 和could用于表示“许可”、“请求”表示“请求”时，用could比can更婉转；could也可表示过去的许可。Eg:(1) Can you go with me？你能跟我一起走吗？(2) He said I could go shopping.他说我可以去购物。(3) Could I ask you something?我能问你些事吗？（二）动词不定式作宾语：是一种非谓语动词形式，其结构为“to + 动词原形”。其中to只是一种符号，并非为介词。动词不定式没有人称和数的变化，在句子中可以用作主语、表语、宾语、

2、补足语、宾语和状语等。* 动词不定式作宾语的用法：1.常接动词不定式作宾语的动词有：want, hope, decide, choose, would like, like, plan, fail等Eg: I decided to go to Beijing by plane. 我决定坐飞机去北京。2.Know, ask, show, teach, guess, find out, understand等动词短语后可用“疑问句+动词不定式”结构Eg: Please teach me how to learn English well. 请教我如何学好英语。3.Like, love, begin

3、, start等动词后即可接动词不定式，也可接动名词，意义上差别不大。Eg: I like singing but I dont like to sing .我喜欢唱歌，但我现在不想唱歌。4.“Find, think, feel + it + 形容词 + 动词不定式”结构，其中it为形式宾语，动词不定式为真正主语。Eg: I find it difficult to learn English. 我发现学英语很难。知识讲解1.homeless people 无家可归的人后缀-less表示否定意义“没有；无”后缀 - ful 表示肯定意义 “有”Eg: hope (动词) “希望” - hope

4、less (形容词) “无望的”- hopeful (形容词) “希望的”Use (动词) “使用” - useless (形容词) “无用的” - useful (形容词) “有用的”2.Once a week 一周一次就其提问是需用how oftenEg: - How often do you visit your parents?- Twice a week.- 你多久看望一次你的父母？-一周两次。3.Cheer .up 使.兴奋；为.加油Eg: Lets cheer her up.让我们为她加油吧。4.Try out 尝试Eg: She wants to try out for a v

5、olunteer.她想要尝试做一名志愿者。5.Around the school 在学校附近Eg: There is a bookshop around the school.学校附近有一家书店。6.put常见搭配：put up 张贴；搭建；举起Put on 穿上Put away 收起来Put out 扑灭Put down 放下Put back 放回原处Eg: I want to put off my plan to work in an animal hospital.我想要推迟我在一家宠物医院工作的计划。（动词不定式作定语）7.Hand out = give out 分发Eg: We will give/hand out the money from the sale to homeless people.我们将从售卖中分发一些钱给无家可归之人。8.Call up 打电话Eg: She hopes to call up at least five primary schools to ask.她希望打电话给至少5所小学问问。9.Come up with 想出Eg: We are trying to come up with some ideas.我们正在试着想一些主意。10.If “如果”常常用来引导条件状语从句，遵循“主将从现”原则If “是否”常常