造10个if引导从句
if引导的条件状语从句造30个
造句如下:
She gets very upset if I exclude her from anything
要是有什么事情我不让她参加,她会非常难过。
He asked if I had left with you, and I said no
他问我是否和你一块儿离开的,我说不是。
Sometimes, that standard is quite difficult, if not impossible, to achieve
有时即便有可能达到那个标准,那也是非常困难。
If I could just make another small point about the weightlifters in the Olympics
请允许我就有关奥运会举重运动员的问题再补充一点。
I wonder if you'd be kind enough to give us some information, please?
请问您能不能给我们提供一些信息?
If there was any disappointment it was probably temporary
即便有点儿失望,也肯定是暂时的。
A number of recent advances hold out if not the hope of a cure, then at least the possibility of some drug which could stop the spread of the virus
近来的一些进展即使不能提供治愈的希望,也至少有望研制出来某种药物来阻止病毒的传播。
I became a distraught, worried mother, a useless role if ever there was one
我变成了一个忧心如焚的母亲,一个全无用处的角色。
She writes me often, if only to scold me because I haven't written to her
她常来信,即使仅仅为了责怪我还没回信给她。
If only you had told me that some time ago
要是你早些时候告诉我该多好啊!
if 一般不引导时间状语从句的额。
引导时间状语从句的从属连词(以下称引导词)很多,为方便记忆,现作以下分类:
1. 基本类
包括before, after, when, while, as, since, till, until, once, as soon as 等。如:
Did anyone call when I was out? 我不在家时谁来过电话吗?
We have known each other since we were children. 我们从小认识。
You’ll feel better after you take the pills. 吃完药丸后你会感到好一些。
Make sure that all the lights are off before you go to bed. 睡觉前一定要关灯。
Don’t promise him anything till we’ve had time to think about it. 在我们有时间考虑之前别答应他什么。
2. 名词类
即由名词词组充当引导词,包括the moment, the minute, the second, the instant 等(均表示“一……就……”。如
I loved you the instant (that) I saw you. 我一见到你就爱上你了。
Tell me the moment (that) you get the results. 你一拿到结果就给我打电话。
3. 副词类
即由副词充当引导词,如 immediately, directly, instantly等。如:
I came immediately you called. 你一打电话我就来了。
Directly I walked in the door I smelt smoke. 我一进门就闻到烟味。
4. 短语类
主是几个涉及time短语,如every time,each time,(the) next time,any time,the last time,the first time 等。如:
Next time you come in, please close the door. 下次你进来,请关门。
My roof leaks every time it rains. 每次下雨,我的房顶就漏。
He felt nervous each time she spoke to him. 每次她和他讲话,他都感到紧张。
The last time we talked he said he needed another two days. 上次我们谈话时他说他还需要两天。
5. 句型类
包括no sooner…than, hardly…when 等。如:
I had no sooner closed the door than somebody knocked. 我刚把门关上就有人敲门。
Hardly were the words uttered when he began to regret them. 话刚说出口他就开始后悔了。
if引导从句如下:
1、He will come if you invite him.
如果你请他,他会来的。
2、I wonder if she is ill.
不知她是否病了。
3、If I were you, I would never do that.
如果我是你,我决不做那件事。
4、I will tell him about it as soon as he comes back.
他一回来我就告诉他这件事。
5、I don't know if he will come tomorrow.
我不知道他明天是否回来。
I. if引导的宾语从句
if 引导宾语从句时,意思为:是否,从句的时态通常要和主句保持一致。
【例句】
I want to know if he lives there. 我想知道他是否住在那儿。
He asked me if I could help him. 他问我是否能帮他。
【考查点】if、whether引导的宾语从句的区别
1. if或whether引导宾语从句时,作“是否”讲,常放在动词ask、see、say、know和find out等后面。一般情况下,两者常可换用,在口语中多用if。
【例句】
Nobody knows whether / if it will rain tomorrow.
没有人知道明天是否下雨。
Lucy asked whether / if they had a cotton sweater.
露西问他们是否有棉制的毛衣。
2. if或whether引导宾语从句时,要注意三个方面,即连词、语序和时态。
if或whether既不能和that 或其他连词(副词)同时使用,也不能省略。
【例句】
我不知道他今天是否会来。
[误] I don’t know that if(whether) he will come here today.
[正] I don’t know if(whether) he will come here today.
他走过来看看猫是否出了毛病。
[误] He came to see what if (whether) there was anything wrong with his cat .
[正] He came to see if (whether) there was anything wrong with his cat .
if或whether引导宾语从句时,虽具有疑问的意义,但其从句应用陈述句的语序。
【例句】
Did you know the way to the hospital? The old woman asked me.
The old woman asked me if / whether I knew the way to the hospital.
老妇人问我是否知道去医院的路。
if或whether引导的宾语从句应和主句的时态保持一致。即主句为一般现在时,从句用任一种时态;主句为一般过去时,从句则用过去时中的任一种时态。
【例句】
I don’t know if (whether) he has come here.
我不知道他是否来过这儿。
Tom asked if (whether) I had read the book.
汤姆问我是否看过这本书。
3. 只能用whether的情况
在动词不定式之前只能用whether:
【例句】
I can’t decide whether to stay.
我不能决定是否留下。
在whether …or not 的固定搭配中:
【例句】
I want to know whether it’s good news or not.
我想知道它是不是好消息。
在介词后,只能用whether:
【例句】
His father is worried about whether he loses his work.
他的父亲担心他是否会失去工作。
用if会引起歧义时:
【例句】
Could you tell me if you know the answer?
这句话有两种意思:
“你能告诉我你是否知道答案吗?”或“如果你知道答案,请告诉我,好吗?”。
如用whether则可避免歧义。
【考题链接】
I don’t know _________ they could pass the exam or not.
A. why B. if C. that D. whether
答案:D
解题思路:本题考查if与whether的区别,在whether…or not的固定搭配中通常只用whether。
II. if引导的条件状语从句
1. 含义
条件状语从句是在复合句中作条件状语的句子。
表示假如有从句的动作发生就会有主句的动作发生,条件状语从句常由从属连词if引导。
【例句】
You will catch the bus if you get up early.
如果你早起的话,就能赶上公共汽车。
2. 类别
主祈从现:主句是祈使句, 从句是由if引导的使用一般现在时的句子。
【例句】
If you want to go, please tell me. 如果你想去,请告诉我。
Print the photo if you like it.
如果你喜欢这照片就把它打印出来。
主将从现:指if引导的条件状语从句用一般现在时,主句用一般将来时。
【例句】
If it doesn’t rain tomorrow, we’ll go to the Great Wall.
如果明天不下雨,我们就会去长城。
If you don’t get up early, you will be late for school.
如果你不早点起床,你上学就会迟到。
3. if引导的条件状语从句用法:
(1)位置
if引导的条件状语从句,既可放在主句之前也可放在主句之后。当从句置于主句之前时,常用逗号与主句隔开。
【例句】
You will catch the bus if you get up early.
=If you get up early, you will catch the bus.
如果你早起的话,就能赶上公共汽车。
(2)时态
应遵循主、从句时态呼应的原则。
当主句是一般现在时(包含祈使句和含情态动词can, may, must等的句子),从句也用一般现在时。
【例句】
You must see the doctor if you are ill.
如果你生病了,你必须去看医生。
If you want to go skating, wear warm clothes.
如果你想去溜冰,穿上暖和的衣服。
如果主句是一般将来时,从句必须用一般现在时。
【例句】
You will be late for school if you get up late.
如果你起晚了,你上学将迟到。
If it rains tomorrow, we won’t go to the Great Wall.
如果明天下雨,我们就不去长城了。
(3)在if引导的条件状语从句中,当主句是一般将来时时,不能使用be going to结构,而要用will。
【例句】
I’ll help you with your English if I am free tomorrow.
如果明天我有空,我会帮助你学英语。
(4)在if引导的条件状语从句中不能使用some,而要用any。
【例句】
If you have any questions to ask, please come to my office.
如果你有问题要问的话,请到我办公室来。
(5)同义句转换
if引导的条件状语从句可转换成简单句,其方法如下:
* 借助“祈使句+and/ or+简单句”结构。其中and表示句意顺承,or表示句意转折。
【例句】
If you work hard, you’ll pass the exam.
=Work hard, and you’ll pass the exam.
如果你努力学习,你就会通过考试。
If you don’t hurry up, you’ll be late.
= Hurry up, or you’ll be late.
如果你不快点,你将会迟到。
**借助介词with 或without来转换。
【例句】
If you help me, I’ll finish my job soon.
=With your help, I’ll finish my job soon.
如果你帮我,我将很快完成我的工作。
If there is no water, fish may die.
= Fish may die without water.
如果没有水,鱼可能会死。
另外,if从句还表示不可实现的条件或根本不可能存在的条件,即一种虚拟的条件或假设。从句多用一般过去时或过去完成时,表示对现在或过去的一种假设。
【例句】
If I were you,I would invite him to the party.
如果我是你,我会邀请他参加聚会。
I would have arrived much earlier if I had not been caught in the traffic.
要不是交通堵塞,我会来得更早一些。
4. 口诀:
if 条件句不一般,几个要点记心间;
条件句,放在前,逗号要放句中间。
条件句表可能,主句多用将来时;
条件句表事实,主句常用现在时。
III. If引导的宾语从句和条件状语从句的区别
if引导条件状语从句时意为“如果”,引导宾语从句时意为“是否”,可用whether替换。【例句】
1) We will go out if it is fine tomorrow. 如果明天天好,我们就出去。
2) I don’t know if the train has arrived. 我不知道火车是否已经到达。
句1)中if引导的是状语从句。这个从句表示“条件”。
句2)中if引导的是宾语从句,充当谓语动词don’t know的宾语。
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