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1、初二升初三英语必背知识点 初二升初三英语知识点主动语态和被动语态主动语态(The Active Voice)表示主语是动作的执行者。被动语态(The Passive Voice)表示主语是动作的承受者。构成:承受者+助动词be+及物动词的过去分词+by+执行者一般现在时:承受者+助动词am / is/are +及物动词的过去分词+by+执行者一般过去时:承受者+助动词was / were +及物动词的过去分词+by+执行者承受者+助动词shall / will be+及物动词的过去分词+by+执行者承受者+助动词 have/ has been+及物动词的过去分词+by+执行者承受者+ can
2、/may/must/should +be+及物动词的过去分词+by+执行者初二升初三英语必背知识点现在完成时:1.概念:过去发生或已经完成的动作对现在造成的影响或结果,或从过去已经开始,持续到现在的动作或状态。2.时间状语:recently, lately, since.for.,in the past few years, etc.3.基本结构:have/has + done4.否定形式:have/has + not +done.5.一般疑问句:have或has。6.例句:Ive written an article.The countryside has changed a lot in
3、the past few years.初二升初三英语期中知识点可数名词变复数的几种形式1.单数名词加s: students, apples, bags, trees, books, brothers.2.以s、x、sh、ch结尾的名词加es: glasses, boxes, brushes, matches.3.以辅音字母加y结尾的名词,变y为i加es: cities, babies, enemies.4.以f或fe结尾的名词,多数变f为v加es: wives, knives.但有些词只加s: roofs,proofs, chiefs.5.以o结尾的名词,有些加es: Negroes, heroes, tomatoes, potatoes. 其它加s: radio s, zoos, pianos, photos.6.不规则名词:footfeet, goosegeese, toothteeth, childchildren, manmen, womanwomen, mousemice.7.单复数同形的名词:sheep,fish,dee.注意:fish表示种类时,也用fishes这样的形式。初二升初三英语必背知识点