1.The doctor didn't have a rest______the operation was over. A.before,B.after,C.until
2._________he heard a girl crying for help outside,he rushed out of the room.
A.Before,B.As soon as,C.After
C
not...until... 直到...才...
B
before :在…之前 as soon as:一…就 after:在…之后 根据句意,他一听到外面女孩的哭救声,就冲出了房间。表示迅速的意思
before,after,as soon as,until在时态上的区别。以下两题请具体作答...
1、选until。为not until的典型用法。2、选as soon as。是“一…就…”的典型用法。两句before均不能胜任;再看after,其引导的从句,与主句的动作发生明显是一前一后,同为过去时态时就出现时态的问题。in the word, 就是as soon as引导的从句与主句的动作之间几乎没有时间间隔,而after引导的存...
时间状语从句的时态问题
时间状语从句常用的连词有:when,as,while,before,after,since,till,until,as soon as,once。【例】Before I could get in a word, he already gave orders.我还来不及插话,他已经吩咐下去了。After the students were all in the lab, the professor brought out three bottles.在学生们...
时间状语从句时态问题
时间状语从句是英语语法中常见的一种结构,其主要通过连词如when, as, while, before, after, since, till, until, as soon as, once等来引导。例如:在我们有机会插话之前,他已经下达了指令。当学生们全部进入实验室后,教授展示了三个瓶子。在学习时间状语从句时,需要注意以下几点:通常情况下,...
状语时间状语从句
时间状语从句是通过一系列连词来引导的,这些连词包括when, while, as, after, before, as soon as, since, till\/until以及by the time。在处理这类从句时,需要注意时态的一致性。通常情况下,如果主句描述的是未来的事情,从句则使用一般现在时。以下是这些连词的举例和用法说明:when: 当莫扎特四岁...
状语从句的时态变化状语从句
1. 时间状语从句:通常由连词when,before,after,as soon as,until (till),since等引导。例如:- The woman began to cry after she read the letter.- I waited until (till) she came back.- The boy didn’t stop talking until the teacher came in.- I’ll tell him the news as...
请解释并说出“before,until,as soon as,after,while,when”等词的用法...
before 在...以前,介词,一般后面接doing sth.如:I play volleyball before I doing my homework.常用短语:before long不久之后 before sunset 日落之前until 直到...才 一般与not连用,如:I didn't sleep until I finished doing my homework.until june 直到六月as soon as不久之后 常用...
when,while,until,before,as,as soo as等时间状语从句在时态上有什么...
as soon as as soon as 意义为“一…就” ,引导时间状语从句,可置于句首或句末,最常见的用法是在将来时态的情境中,遵守“主将从现”,的原则,i.e.1. I'll write you as soon as I get there.我一到那儿,就给你写信。2. They will post the tickets to me as soon as they ...
过去完成时。现在完成时。怎么区分概念是什么希望用更形象的让我知道1...
如when,before,after,as soon as,till\/until引导的 例如: When I woke up, it had already stopped raining. 我醒来时雨已停了。 She didn’t go to bed until she had finished her work. 她直到把工作做完之后才睡觉。 注意:如果两个动作紧接着发生,则常常不用过去完成时,特别是在包含before和after的...
before,after,until 引导的状语从句用什么时态
before,after,until 引导的状语从句用一般现在时代替一般将来时,其他时态不变.when、while、until、after、before、as soon as引导时间状语从句是的主句和从句的时态是怎样的 时间状语从句主要考察引导词的使用和主句从句的表达。对于主句从句的表达方面的考查则是侧重于:如果表示的是将来发生的事情时,...
when until while as soon as before after都怎麽用?前后时态都是神魔...
回答 when 引导的从句,不一定指出具体的时间点。如回答句( 1 )可用 tomorrow, next month 等。而回答 what time 引导的问句,则必须说出具全的时间点,如 at two o'clock, at five past ten 等。2. 作连接副词,引导名词性从句或不定式,意为“什么时候”。从句使用陈述句语序,时态根据实际...