第12讲 If 条件状语从句-2023年新七年级英语暑假精品课（牛津深圳版）

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第12讲 if 条件状语从句
知识导航

if 条件状语从句的定义
if 条件状语从句的构成
if 条件状语从句中时态的运用（主将从现，主线从现，主情（祈）从现）


if条件状语从句


知识梳理

If引导的条件状语从句
一．If引导的条件状语从句的定义
条件状语从句在复合句中作条件状语，表示假如有从句的动作发生或从句的状态存在，就会导致主句的动作发生或状态存在。条件状语从句常由连词if引导。
二．If引导的条件状语从句的句式结构
if引导的从句用于表示条件，主句用于表示结果。
例句：If it doesn't rain, I will go to the cinema tomorrow.
从句 主句
三．If引导的条件状语从句中的时态
1. 主将从现：
①． 当主句的动作或状态表示可能的结果时，主句的谓语动词用一般将来时，if引导的条件状语从句的谓语动词用一般现在时，即“主将从现”。类似用法还有unless（除非）, when, as soon as（一。。。就。。。），as long as(只要。。。)，once（一旦。。。） 等引导的状语从句。如：
If it rains this afternoon, we’ll stay at home. 如果今天下午下雨，我们将待在家里。
I will visit you as soon as I arrive in Guangzhou. 我一到广州就回去拜访你。
②．if引导的条件状语从句可置于主句的前面或主句的后面。置于主句的前面时，须用逗号与主句隔开；置于主句的后面时，则不须用逗号。如：
If I am free this weekend, I will go to the bookstore.
= I will go to the bookstore if I am free this weekend.
如果这周末有空，我会去那家书店。
2.主情从现：主句的谓语部分可根据句子的实际情况用其他情态动词替换will。如：
She may feel sad if you don’t come. 如果你不来，她可能会伤心。
3主祈从现：if引导的条件状语从句，主句可以是一个祈使句，从句：用一般现在时。
Don’t wait for me if I’m late .
【拓展】
4.主现从现：当主句的动作表示真理或必然的结果时，主句和if引导的条件状语从句的谓语动词都用一般现在时。如：
If we heat ice, it turns into water. 如果我们把冰加热，它就会化成水。
If you drop the glass on the floor, it breaks. 如果你把这玻璃杯摔落到地上，它会碎掉。
【典例分析】
1．If you ________ going shopping, you can go to Hong Kong.
A．likes B．will like C．like D．liked
2. If you want to visit the Palace Museum, I ________ tickets for you tomorrow.
A．buy B．buying C．will buy D．buys
专题过关

一、单项选择
1．（2022春·黑龙江绥化·七年级绥化市第八中学校校考期中）I don’t know if it ________ next week. If it________, we won’t have the party.
A．will rain; will rain B．rains; will rain C．will rain; rains
2．（2022春·上海徐汇·七年级上海市徐汇中学校考期中）— I will go to the park with my parents if it ________ tomorrow.
— Enjoy your time.
A．rains B．will rain C．doesn’t rain D．won’t rain
3．（2022秋·重庆南岸·七年级重庆第二外国语学校校考期中）Our dreams will come true ________ we don’t lose hope in trouble.
A．though B．as long as C．because D．so
4．（2022秋·北京顺义·七年级北京市顺义区仁和中学校考期中）We ________ the park with my parents if it doesn’t rain tomorrow.
A．go to B．went to C．will go to
5．（2022秋·上海普陀·七年级统考期中）You can visit the Palace Museum ________ you want to learn the history of China.
A．before B．if C．because D．after
6．（2021春·上海浦东新·七年级统考期中）If you ________ to the top of the mountain, you will find great views.
A．comes B．come C．coming D．will come
7．（2022春·江苏无锡·七年级统考期中）—I have some problems with my study. Can you help me?
—Sure. ________ you listen carefully in class and do homework by yourself, you’ll make progress (进步).
A．So B．And C．If D．But
8．（2022春·上海静安·七年级校联考期中）Let’s go to visit Shanghai Museum if you _______ free tomorrow.
A．will be B．are C．were D．to be
9．（2022春·河北唐山·七年级统考期末）—Tomorrow is Sunday. What about going shopping together?
—I will go ________ I’m free.
A．before B．if C．until D．so
10．（2022春·河北沧州·七年级统考期末）You can’t cross the street ________ the lights are red.
A．if B．or C．but D．and
11．（2022秋·上海奉贤·七年级校联考期末）Most of the students will go to visit the exhibition if the weather _______ fine tomorrow.
A．is B．are C．was D．will be
12．（2023春·上海·七年级期末）If you go to the China Pavilion(中国馆), you _______ it’s full of visitors.
A．find B．found C．will find D．have found
13．（2022春·河北承德·七年级统考期末）— When shall we begin our meeting?
— We’ll begin it when Helen _________.
A．is coming B．came C．will come D．comes
14．（2022春·辽宁沈阳·七年级东北育才学校校考期中）—Mum, ______ shall we have lunch? —We will have it when your dad ______.
A．when；returns B．where；will return
C．where；returns D．when；will return
15.I will go swimming with you if I ________ free tomorrow.
A．will be B．shall be C．am D．was
二、用所给单词的正确形式填空
1.（2022春·山东烟台·七年级统考期末）If it _________ (not rain), we will go out for a trip.
2．（2022春·全国·七年级期末）The students ________ (go) to the Summer Palace if they don’t have a test.
3．（2022春·江苏无锡·七年级校联考期中）If you __________ (not be) sure about the time to leave, you can ask the guide.
4．（2022春·贵州六盘水·八年级统考期中）If Sally ________ (come) back home, please tell me.
5．（2022春·江苏无锡·八年级校联考期中）It will be quite dangerous to get around if you __________ (not wear) a mask．
6．（2022春·江苏南京·八年级南京外国语学校校考期中）I think you ________ (feel) happy if you go and join them.
7．（2022秋·湖南永州·九年级统考期中）If it ________ (rain), I will not go out tomorrow.
8．（2021秋·江苏无锡·八年级统考期中）People always say, “If winter ________ (come), can spring be far behind?”
9．（2022秋·江苏无锡·八年级统考期中）If the boy ____________ (not be) so lazy, he’ll pass the exam.
10．（2022秋·七年级课时练习）I ________ (go) to the beach if it ________ (not rain) this week.
三、汉译英：整句
1．（2022春·江苏南通·七年级校考期中）如果你想更多地了解中国艺术，不要错过这些表演。(learn…about…)
________________________________
2．（2022春·山东泰安·八年级统考期中）如果你胃疼，就不要吃太多。（汉译英）
________________________________________
3．（2022春·广东深圳·七年级校考期中）如果你更想在冬季游览法国，你可以尝试在山上滑雪。(prefer to...) （汉译英）
_________________________________
4．（2022秋·上海嘉定·七年级统考期末）如果你想保持健康，你应该做更多的运动并且少吃甜食。(if)   
___________________________
5．（2022春·山东淄博·七年级校考期末）如果你努力，你就会取得进步。
_________________________________________________________________
中考演练

1．（2022·广西桂林·统考中考真题）If you ________ along this road, you will find a park.
A．go B．went C．goes
2．（2022·山东东营·统考中考真题）You won’t be allowed to enter the school _________ your temperature is higher than normal.
A．if B．until C．though D．unless
3．（2022·湖北黄石·统考中考真题）There ________ a volleyball game next Saturday. If it ________ we’ll have to put it off.
A．is going to be; rains B．is going to be; will rain
C．is going to have; will rain D．is going to have; rains
4．（2022·江苏南通·统考中考真题）Mary is good at writing. I am sure she’ll get a good place ________ she takes part in the writing competition.
A．before B．if C．though D．unless
5．（2022·辽宁丹东·统考中考真题）— Can we win the basketball game tomorrow?
— Of course, _______ we try our best.
A．if B．or C．unless D．though
6．（2022·河北·统考中考真题）________ you can use your dictionary, you will learn English better.
A．If B．Unless C．Though D．Before
7．（2022·四川达州·统考中考真题）The local government advises people ________ to other places ________ it is not necessary during the pandemic.
A．travel; unless B．to not travel; if C．not to travel; unless D．not to travel; if
8．（2022·广西百色·中考真题）I don’t know if it _________ tomorrow, but if it _________, I’ll stay at home.
A．will rain; rains B．will rain; will rain C．rains; will rain D．rains; rains
9．（2022·黑龙江哈尔滨·统考中考真题）—Happiness is about having each tiny wish come true.
—________ we work hard, we’ll make our life full of happiness.
A．If B．Unless C．Though
10.We__________the exam as long as we keep trying and never give up.
A. passed B. pass C. will pass D. have passed