(
课件网) 八下语法复习 unit 5-unit 6 1. 以when和while引导的时间状语从句 1) 延续性动词和非延续性动词 延续性动词指动作可以延续一段时间, 而不 是瞬间结束。 如: work、study、drink、eat等。 非延续性动词指动作极为短暂，瞬间结束。 如: start、begin、hit、jump、knock等。 Unit 5 2) 在本单元中，出现了以when和while引导的时间 状语从句。when表示“当……的时候”。从句中 既可用延续性动词，又可用非延续性动词，这些 动词既可以表示动作，又可表示状态。从句中动 作既可和主句的动作同时发生，又可在主句的动 作之前或之后发生。如： Mary was having dinner when I saw her. The boy was still sleeping when his mother got home yesterday morning. 3)while表示“在……的时候”、“在……期间”。 它强调主句的动作与从句的动作同时发生或主句的 动作发生在从句的动作过程中。While从句中必须 是表示动作或状态的延续性动词。如： The weather was fine while we were in Beijing. She called while I was out. 如果主句的动作在从句的动作过程中发生，从句常 用进行时。如:此处缺少例子 1. ____ Jennifer was reading a magazine, her sister was listening to the pop music. A. While B. When C. What time 2. I was trying to draw a cat on the board _____ the teacher came in. A. while B. when C. what time 3. My best friend visited my house while I _____ dinner in the kitchen. A. cooked B. cooking C. was cooking A B C Exercises 4. ― When _____ the car _____ ― In 1885. A. did; invent B. was; invented C. does; invent D. is; invented 5. Our teacher wants us to be _____ when we talk with the foreigners. A. comfortable B. unusual C. grateful D. confident B D 6. — Dick gave me a note while I _____ in the library. — I guess he made it to say “sorry” to you. A. am reading B. was reading C. reads D. will read B 2. 过去进行时 1. 概念: 表示过去某一时刻或某段时间内正进行 的动作。 2. 构成: was/were + 动词现在分词 3. 用法: a: 表示某一时刻正进行的行为，与特定的过去 时间状语连用，常见的时间有: at 8 last night, at this time, at that time, at that moment 等 What were you doing at 10 yesterday morning I was writing a letter to my father at that moment. b: 表示过去某段时间内正进行的动作。 e.g. We were building a house last winter. They were waiting for you yesterday. 否定句和疑问句： e.g. We were not sleeping at home. Was he feeling well 3.现在分词的构成 一般动词在词尾加-ing，如go—going 2) 以不发音字母e结尾的动词, 先去掉e, 再加-ing come — coming make — making write — writing 3) 以重读闭音节结尾的动词，如果末尾以一个辅 字母结尾，应先双写这个字母，再加ing，x和w结尾 的除外。 get — getting swim — swimming show — showing 4) 以字母y结尾的单词，直接加ing。如： carrying playing studying 5) 以字母ie结尾的动词，变ie为y，再加ing。 die → dying lie →lying 6) 以元音字母加e结尾，或以e结尾，且e发音的 动词，直接加- ing。 see — seeing be — being 4. 使用进行时态的注意事项 1)一些动词，如see, hear, love, like, know, remember, understand, have等表示感情、知觉 和状态的词，一般不用于进行时态。 2) 在there和here引起的句子中，常用一般现在时 代替现在进行时。 e.g. Here comes the bus. There goes the ... ...
