外研版九年級(jí)英語(yǔ)上冊(cè)《Language in use》Wonders of the world PPT課件下載，共43頁(yè)。
Learning goals
通過(guò)本課的學(xué)習(xí)，學(xué)生能夠：
①總結(jié)和練習(xí)if從句。
②學(xué)習(xí)描述一個(gè)問(wèn)題并給出相應(yīng)的建議。
③能夠?yàn)橐环蓦s志寫問(wèn)題頁(yè)。
Language practice
Look at these sentences, which sentences have a comma(逗號(hào)) in the middle and which doesn’t?
If I start after dinner, I’ll finish it before I go to bed.
If you do all these other things instead of your homework, you won’t have time to study.
He thinks something will go wrong if I play games on it.
一、條件狀語(yǔ)從句
If I start after dinner, I’ll finish it before I go to bed.
翻譯：如果我在晚飯后開始，我將在我睡覺前完成它。
If you do all these other things instead of your homework, you won’t have time to study.
翻譯：如果你老是做與學(xué)習(xí)無(wú)關(guān)的事情，那么你就沒有時(shí)間學(xué)習(xí)。
He thinks something will go wrong if I play games on it.
翻譯：爸爸覺得如果我在電腦上玩游戲的話，電腦就會(huì)出毛病。
1. 用法:
如果 if 引導(dǎo)的從句表示某種假設(shè)的情況，主句則表示此種情況所導(dǎo)致的結(jié)果。
2. 主句與從句時(shí)態(tài)的問(wèn)題:
(1)“主將從現(xiàn)”
if 引導(dǎo)的條件狀語(yǔ)從句，若主句用一般將來(lái)時(shí)，從句用一般現(xiàn)在時(shí)。
e.g. If he runs, he’ll get there in time.
如果他跑步去，他就會(huì)及時(shí)趕到那兒。
(2)“主情從現(xiàn)”
if 引導(dǎo)的條件狀語(yǔ)從句，若主句中有情態(tài)動(dòng)詞時(shí)，從句用一般現(xiàn)在時(shí)表示將來(lái)。
e.g. If it stops snowing, we can go out.
如果雪停了，我們就可以出去。
(3)“主祈從現(xiàn)”
if 引導(dǎo)的條件狀語(yǔ)從句，若主句是祈使句，從句用一般現(xiàn)在時(shí)。
e.g. If you have an exam, be careful.
如果你要考試，要仔細(xì)。
Rewrite the sentences with if.
Listen in class, or you will not understand what to do.
If you do not listen in class, you will not understand what to do.
1.Eat your breakfast, or you will get hungry at school.
If you don’t eat your breakfast, you will get hungry at school.
2.Hurry up! You will be late.
If you don’t hurry up, you will be late.
3.Read the book carefully. Then you will not make mistakes.
If you read the book carefully, you will not make mistakes.
4.Don’t watch too much TV, or your eyes will hurt.
If you watch too much TV, your eyes will hurt.
5.Work harder! You will get higher marks.
If you work harder, you will get higher marks.
Summary
1.Grammar:
①總結(jié)和練習(xí)if從句；
②學(xué)習(xí)描述一個(gè)問(wèn)題并給出相應(yīng)的建議；
2. 介紹了起源于18世紀(jì)西方報(bào)紙或雜志為人排憂解惑的欄目——建議專欄
實(shí)踐與拓展
將自己在學(xué)習(xí)或生活中遇到的問(wèn)題寫在紙條上，然后放在我們的百寶箱，隨機(jī)抽取，然后大家一起想辦法幫助解決問(wèn)題。
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關(guān)鍵詞：Language in use PPT課件免費(fèi)下載，Wonders of the world PPT下載，.PPTX格式；
