英语是一门很重要的学科,学过英语的都知道英语语法的重要性。下面是初三英语语法重点总结,仅供大家参考。 一般过去时 1.概念:过去某个时间里发生的动作或状态;过去习惯性、经常性的动作、行为。 2.时间状语:ago, yesterday, the day before yesterday, last week,last(year, night, month...), in 1989, just now, at the age of 5, one day, long long ago, once upon a time,etc. 3.基本结构:be动词;行为动词 的过去式 4.否定形式:was/were+not;在行为动词前加didn't,同时还原行为动词。 5.一般疑问句:was或were放于句首;用助动词do的过去式did 提问,同时还原行为动词。 过去进行时 1.概念:表示过去某段时间或某一时刻正在发生或进行的行为或动作。 2.时间状语:at this time yesterday, at that time或以when引导的谓语动词是一般过去时的时间状语等。 3.基本结构:was/were+doing 4.否定形式:was/were + not + doing. 5.一般疑问句:把was或were放于句首。 语法举例 1.时态:一般现在时 1.概念:经常、反复发生的动作或行为及现在的某种状况。 2.时间状语: always, usually, often, sometimes, every week (day, year, month…), once a week, on Sundays, 3.基本结构:动词 原形 (如主语为第三人称单数,动词上要改为第三人称单数形式) 4.否定形式:am/is/are+not;此时态的谓语动词若为行为动词,则在其前加don't,如主语为第三人称单数,则用doesn't,同时还原行为动词。 5.一般疑问句:把be动词放于句首;用助动词do提问,如主语为第三人称单数,则用does,同时,还原行为动词。 各种时态的被动语态结构 一般现在时的被动语态:主语+am / is / are (not)+过去分词 一般过去时的被动语态:主语+was / were +过去分词 现在完成时的被动语态:主语+have / has +been +过去分词 一般将来时的被动语态:主语+will +be +过去分词 过去将来时的被动语态:主语+would / should + be +过去分词 过去进行时的被动语态:主语+was / were + being +过去分词 过去完成时的被动语态:主语+had + been +过去分词 情态动词的被动语态:情态动词+be+过去分词 状语从句 状语从句就是由一个句子在复合句中充当状语。所以状语从句又可以分为时间状语从句、地点状语从句、原因状语从句、目的状语从句、结果状语从句等等。每种状语从句都有特定的引导词: (1)地点状语从句:where,wherever (2)时间状语从句:when, while, as, before, until, till, since (3)原因状语从句:because, since,as, now that, not that…, but that…, seeing that, considering that, in that (4)目的状语从句:so, so that, in order that, that, to the end that, in case,for fear that,lest (5)结果状语从句:so...that, such that, so that, with the result that (6)条件状语从句:if,unless,if only,only if,in case,suppose/supposing (that),provided/providing(that),on condition that,so/as long as (7)方式状语从句:as, as if, as though (8)让步状语从句:though, although, as, even if, even though, whether, no matter,whether...or, no matter with (责任编辑:admin) |