if引导的真实条件句

与将来事实相反
If it were/ should be fine tomorrow , I would go to see him.
与将来事实相反
假如他来了, 我们对他说什么呢？
If he were to come, what should we say
to him.
假如他看见我, 就会认识我。 If he should see me, he would know me.
3. You didn't let me drive. If we _____in turn, you ______so tired. (1996年全国高
1、If+主语+动词过去式 2、If+主语+were to+ 动词 原形 3、If+主语+should +动词原 形 主语+would ( should / might / could )＋动词 原形
Exercise (1):
1.If I am (be) free, I’ll visit my aunt next Sunday. 2.If it is (be) cold tomorrow, I will wear my sweater. 3.If Mary buys (buy) the book, she will use up all her money. 4.If I study(study) hard, I’ll win the English competition.
•You must stop if the traffic light is red. •You may go fishing if you are free.
•He can go home if he finishes his homework.

ut one hundred Yuan and ask
W
hat would you do if it was yours? Etc.
Help the students to answer :I would
buy a pair ቤተ መጻሕፍቲ ባይዱf shoes.
3.
指出虚拟条件句
:If +
主语
+did(were),
主语
’
ll tell you .
A. will come comes B. comes comes C. comes will D. is coming is coming
( ) 4. If I _____a lot of money , I ______a big house at once .
A. have buy B. had would buy C. had bought D. have am buying
主语
+would + do. I would give it to charity.
3.hundred / thousand/ million give it go medical research
put it in the bank
学生学习活动评价设计
测试评价：单项选择
( )1. If I _______ a teacher, I would be strict with my students
), I would read a book.
教学过程
（教学过程的表述不必详细到将教师、学生的所有对话、活动逐字记录，但是应该把主要教学环
节、教师活动、学生活动、设计意图很清楚地再现。）

a fact
If I had a lot of money now, I would travel the world.
a wish
If条件句:真实条件句 和非真 实条件句 两种。
a. 真实条件句：条件是真的或有可能实 现的, 采用陈述语气。
b. 非真实条件句：条件是无法实现或几 乎无法实现的, 采用虚拟语气。
主句与从句的动作发生在不同的时间, 这时主从句位于动词的虚拟语气形式因 时间不同而不同, 这叫做混合条件句。
例句中从句与过去事实相反, 主句与 现在事实相反
If you had asked him yesterday, you would know what to do now.
If the staff had been more careful, the mall would not be on fire now.
b. If you _h_a_d__g_o_t (get) up earlier, you w__o_u_ld__h_a_v_e__ca_u__g_h_t (catch) the first train.
c. If I _h_a_d_m__e_t (meet) you yesterday, we w__o_u_l_d_h_a_v_e__g_o_n_e (go) to the concert together.
3. 与将来事实相反
从句的谓语用If I (we, you, he, they) ＋ 动词过去式或 were to do 或should do 形式, 主句谓语用should(第一人称) /would (第二、三人称) /could/ might ＋ 动词原形。
If he got up early, he would be on time.

条件状语从句的用法的结构由引导词if或unless引导的状语从句叫做条件状语从句。

那么你知道条件状语从句的用法吗?下面跟着店铺学习英语语法中条件状语从句的用法及相关知识吧。

条件状语从句的用法unless = if...not.e.g. Let's go out for a walk unless you are too tired.If you are not too tired,let's go out for a walk.if 引导的条件句有真实条件句和非真实条件句两种：真实条件句如：If it rains tomorrow,we won’t go on a park非真实条件句是虚拟语气的一种，表示与事实相反，如：If I were you,I would go with him.so/as long as只要由as (so) long as,in case引导。

So long as you’re happy,it doesn’t matter what you do.只要你高兴，你做什么都没有关系。

You may borrow my book as long as you keep it clean.只要你保持书的清洁，你就可以把我的书借去。

Take your umbrella in case it rains.带着你的伞吧，以防下雨。

例句引导条件状语从句的连词有：if(如果)，unless(除非;如果不)，as long as(除非;只要)，supposing(假设)，on condition that(条件是)，in case(如果)。

【例】You can't learn English well unless you work hard.除非你努力学习，否则你学不好英语。

You can use my bike on condition that you return it by Friday.你可以使用我的自行车，条件是你星期五以前还。