before连词用法及例句、句型。（没拿课本…哭…）

Question

RT

Answer 1

before 在英语中是一个比较常用的虚词，它既可作介词或副词用，也可作从属连词用。在近几年的高考试题中常常出现考查其从属连词用法的题目。下面就把 before 作从属连词的用法归纳如下： 1. 表示“在……之前就……”。例如： Mary had finished her homework before her mother returned. 在她妈妈回来之前玛丽就已经完成了作业。 2. 表示“过了多久后才……；动作进行到什么程度才……”。例如： The man almost knocked me down before he saw me. 那个男人差点把我撞倒才看见我。 They walked about 30 miles to the west before they saw a village. 他们西行了大约 30 英里才看见一个村庄。 They worked day and night about three days before everything returned to normal. 他们日夜工作了大约三天，一切才恢复正常。 3. 表示“来不及；尚未……就……”。例如： Before I could get in a word, he had measured me. 我还没来得及插话，他就已经给我量好了尺寸。 He ran off before I could stop him. 我还没来得及阻止他，他就已经跑了。 She left the company before I could have a word with her. 我还没来得及和她打声招呼，她就已经离开了。 4. 表示“刚……就……”。例如： I had hardly sat down before the bell rang. 我刚坐下铃就响了。 5. 表示“不知不觉就……；还没弄清就……”。例如： Time passed quickly and three months went by before Aqiao knew it. 时间过得很快，不知不觉阿巧已经度过了三个月。 6. 表示“宁愿……，决不……；与其……，毋宁……”，常与 will 或 would 连用。例如： I would die before I would tell. 我宁死不说。 I'd shoot myself before I apologized to him. 我宁死也不向他道歉。 I would / will die before I surrender. 我宁死不屈。 7. 表示“否则；以免”。例如： Do it now before you forget. 现在就做，免得忘了。 I'll write it down before I forget it. 我得记下来以免忘了。 8. 用于句型“ It was + 时间段 + before ... ”，表示“过了多久才……”。例如： It was three days before he came back. 三天后他才回来。 9. 用于句型“ It was not long before ... ”，意为“不久就……”。例如： It was not long before he sensed the danger of the position. 不久他就意识到了处境的危险。 10. 用于句型“ It will be (not) + 时间段 + before ... ”，表示“要过多久／不久……才……”。例如： It will be half a year before you graduate from this school. 半年后你才能从这所学校毕业。 It will be not long before you find you are wrong. 不用多久你就会发现你是错的。

Answer 2

before表示“在……之前”的意思，强 调时间先后关系before通常与过去完成时连用I had met him three years before .（距当时）三年前我见到他一次。It was...before