冠词的讲解及用法(2)
不定冠词基本用法
1)用于泛指人或者事
She wanted to rent an apartment near the campus. .她想在学校附近租一套房子。
Before she left for London, Sally sent me a picture of herself. 萨莉动身去伦敦前送给我一张她的照片。
A grammar book is necessary to a language learner. 对语言学习者来说，语法书是很必要的。
A teacher likes putting a watch on his / her desk while lecturing .老师讲课时总爱将手表放在讲台上。
2) 用于某些词组中。这种用法是约定束成的，我们只有遵从而无旁的选择。例如：
have a rest(休息) have a look(瞧瞧) have a good time(过得开心)
take a shower(淋浴) take a break(休息) take a bath(洗澡)
get a cold(患感冒) get a fever(发烧) develop into a habit (养成习惯)
make a living(谋生) make a guess at(猜测) make a difference between(区分)
in a moment(过一会儿) in a sense(在某种意义上) in a way(在某种程度上)
once in a while(间或) have an advantage over(优于)
have an edge(略胜过)as a result(因此)as a rule(通常)as a whole(总体上说)
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