八年级下册 unit5 if you go to the party,you will h**e a great time!(sectiona1a-2c) 导学案。
沙河驿镇初级中学英语侯小玲。
学习目标：1、了解掌握if引导的条件状语从句。
2、会运用if条件状语从句。
学习重难点：
1、if条件状语从句。
学习过程：stepⅰ、look at these sentences !
if you want to turn on the light, press the red butten.
if you are careful enough, you won’t make any mistakes
if she is free tomorrow, she will go camping with us.
if mary studies harder, she’ll get better grades.
if it doesn’t rain this sunday, we can play outside.
if she becomes a star, her parents won’t send her away.
讨论，并说一说上面的句子都是些什么句子。
stepⅱ "if条件状语从句"的心里话(1)
hi，everyone！“我”是条件状语从句，表示主句动作发生的条件。在初中阶段“我”常由if（如果）引导，表示假如有“我”的动作发生，那么就会有主句的动作发生。如：
please call me if he is at home ！
好了，现在大家来看“我”心里话的第一部分。
位置的变换：我，if引导的条件状语从句可以位于主句之前，也可以位于主句之后。当我在前面的时候，必须用逗号把我和主句隔开！如：
if you ask him，he will help you 。（he will help you if you ask him.）
现在大家都知道了吧，我和主句的位置可是可以互换的哦！那下面我们来做点练习吧！
1、if i play well, i’ll play the solo.
2、if the teacher chooses kylie, she’ll play the dance music.
3、if she becomes a star, her parents won’t send her away.
stepⅲ "if条件状语从句"的心里话(2)
在“我们”条件状语从句中有一个关于时态的基本规章制度——主、从句时态呼应。即主句用现在时，从句也用现在时；主句用过去式，从句也用过去的某种时态。具体的讲，主句是一般现在时（包含祈使句和含有情态动词can，may，must的陈述句），从句也用一般现在时。
如：if you want to turn on the light, press the red butten.
if it doesn’t rain this sunday, we can play outside.
另外，请注意哦！如果主句是一般将来时，从句仍然要用一般现在时表示将来。你一定要牢记啊！如：
if it rains tomorrow, we won’t go on a picnic.
if i don't eat so much, i will get thinner.
i’ll ask the teacher for help if i don’t understand.
if you copy my homework this time, you will start a bad habit.
if he doesn’t do it, i will do it.
下面我们来继续做点练习吧！
1、if you don’t (be) late for school, my teacher (be) angry.
2、if she (win) the prize, we (be) happy for her.
3、if you (tell) the truth, it (prove) you are honest.
stepⅳ "if条件状语从句"的心里话(3)
该与大家说说“我”的第三句心里话了，“我”和主句还有一个伙伴，有时可以代替“我”和主句。她就是“祈使句+and/or+简单句”。其中，and表示句意顺承，or表示转折，意为“否则”。
来看下例子吧！
1、work harder,and you’ll pass the exam.
=if you work harder, you’ll pass the exam.
2、eat some breakfast, or you'll get hungry at shcool.
=if you don't eat some breakfast, you'll get hungry at shcool.
3、hurry up, or you will be late again.
=if you don’t hurry up, you will be late again.
那么接下来我们再接再励，练习来了！
rewrite the sentences with if
1、work hard, and you will get the prize.
2、hurry up! or we'll be late.
3、read the instructions carefully. and you'll know what to do.
stepⅴ look and say（1a p34）
stepⅵ 团结就是力量呦 remember to work with your partner(1c)
stepvii read the phrases and questions in 2a-2c,find out the difficulties,and then you can ask others for help!remember?不耻下问也是文明人的美德呀！
stepviii homework(good luck to you)
( will go/go/goes) to europe if she (will pass/pass/passes) the exams .
2. the graduates (will teach/teach/teaches) in the poor village if the ministry of education (will agree/ agree/agrees) soon.
3. if there (will be/ are/is) a car accident, they (will call/call/calls) 110 for help at once.
4. if it (won’t/don’t/doesn’t/ isn’t) rainy, we (will take/ take/takes) walk outside.
5. if a ufo (will land/land/lands) in front of me, i (will go/go/goes) in to look for the alien.
6. if he (will h**e/h**e/has) money, he (will bulid/build/builds) a science lab.
wait for me if i (am/ will be) late.
(won’t/don’t) go to the beach if it (will rain/rain /rains).
9. i (will call/ call) you if he (will stay/stay /stays) at home.
10. mr smith (will let/ let/lets) you know if he (will need/ need/ needs) help.
11. (will / do/ does) he visit the museum if he (won’t / don’t/ doesn’t) get tired?
12. where (will/ do/does) they live if they (will miss/ miss/ misses) the bus?
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