【最新】九年级英语下册 Module 1 Unit 3 Language in us课件 外研 版 课件 Unit 3 Language in use 不定冠词 a, an 1. 用于单数普通名词之前,指该名词的全体 。 A bike is very useful. 2. 泛指一个,第一次提到 I have a book. 3. 固定词组中 have a look take a walk 【最新】九年级英语下册 Module 1 Unit 3 Language in us课件 外研 版 课件 Unit 3 Language in use a university, useful useless European an honest hour 8-year-old “S, M, N, H, R, F, R, X” There is an “s” in the word “star”. Yao Ming is an NBA star. 【最新】九年级英语下册 Module 1 Unit 3 Language in us课件 外研 版 课件 Unit 3 Language in use 定冠