新概念英语第一册 课文词汇讲解.ppt

Lesson 117 When 、 while 引导的时间状语从句可以表示当一个动 作正在进行的时候，另一个动作发生或完成了。也可 以表示一个动作发生或完成，另外一个动作正在进行。 ? When my husband was going into the dining room this morning, he dropped some coins on the floor. ? While we were having breakfast, our little boy, Tommy, found two small coins on the floor. ? When I entered into the classroom, all students were looking at me. ? My wife was cooking the dinner while I was working in the garden. 过去进行时 构成：主语 +was/ were +V- ing 1. They were study ing English at this time yesterday. 2. She was hav ing a holiday when I went to visit her. 3. He was plan ning a trip to England when I met him. 概念：表示过去某时正在进行的状态或 动作。 形容词比较级和最高级 英语中大多数形容词是可以分级的，一般有三 个等级： ? 原级， ? 比较级 ? 最高级。 ? 原级 形容词的本来形式就是形容词的原级。用原级 进行比较时可以使用下面两种结构： 1. 表示比较的双方相等，用” as…as” 结构， 表示“前者像后者一样”，即 A + be + as + 形容词原级 + as + B. e.g. John is as tall as his brother. 2. 表示比较的双方不相等，用” not as…as” 结构，表示“前者不如后者”，即 : A + be + not as + 形容词原级 + as + B. e.g. John is not as tall as his brother. 比较级 ? 当把一个人或物同另外一个人或物比较时，就需要用 到形容词比较级。其结构是： A + be + 形容词比较级 + than + B. e.g. Jackie is taller than Alex, but Alex is heavier than Jackie. 最高级 ? 三者或者三者以上的人或物进行比较时，需要使用形 容词的最高级。其结构是： A + be + the 形容词最高级 + of / in + 比较范围 . (Note: 形容词最高级前面要加 定冠词 the) e.g. Jackie is the tallest in our class. or Jackie is the tallest of all the students. 比较级的几种用法： 1 ，表示倍数， A+be+ 数词 +times+ 形容词比较级 +than+B ? Our room is twice larger than theirs. 我们的房间是他们的两倍大。 注：两倍为 twice 而不是 two times. 2 ，表示大多少，多多少，高多少等 A+be+ 数量词 + 比较级 +than+B ? She is two years older than me 她比我大两岁。 ? This stick is three meters longer than that one. 3 ，用比较级表示最高级 A+be+ 比较级 +than+any other+ 单数名词， 或者， A+be+ 比较级 +than+the other+ 复数名 词 ? He is taller than any other student in the class. 他比班上其他的同学都高。 4 ，两个中比较 …… 的 A+the+ 比较级 +of the two ? He is the clever