Module 9 模块语法与主题写作详解与训练-广西桂林市雁山中学外研版八年级上册英语

外研版英语八（上）Module 9模块语法与主题写作详解与训练 模块语法详解 冠词和数词 一、冠词 冠词：是限定的一种词，不能单独使用，常用于修饰名词，帮助指明名词的含义。冠词有三种形式：不定冠词（a/an）, 定冠词（the）和零冠词（/）。a用在辅音音素开头的单词之前，an用在元音音素开头的单词之前。如：a university, an hour, a book, an apple等。 ●1. 不定冠词的用法 ⑴ a和an均用在单数名词之前，泛指某一类人或事物。如：John is a student. // Mary is an English teacher. ⑵ 表示数量“一”，但数的概念不如one强烈。如：Pass me an apple, please. // I have a computer and a car. ⑶ 指某人或某物，但不具体指明是哪个人或物。如：A student wants to see you. // A girl is waiting for you outside. ⑷ 表示“每一”的意思，相当于every。如：Take the medicine three times a day. // They go to see their parents once a week. ⑸ 用在序数词前表示“又一，再一”。如：I’ve tried three times. Let me try a fourth time. ⑹ 用在某些固定短语中。如：a few/little, a cup/bottle of, catch a cold/bus, have a good time, have a look, in a minute, make a mistake, a lot of, have a rest, half an hour, a kind of, a number of, have a talk with等。 ●2. 定冠词的用法 ⑴ 特指某(些)人或某(些)事物。如：The girl in red is my sister. // The man with a flower in his hand is Jack. ⑵ 指谈话双方都熟悉的人或事物。如：Pass me the ball, please. // Open t