Unit4  What would you do 教案

what would you do?

教材分析（教學要求）重點1   milliona hundred                   100a thousand                  1,000ten thousand                10,000a million                    1,000,000重點2   -if句上個學期，我們曾經學過由if 引導的句子，你還記得嗎？對了，“ i’ll not go to the zoo if it rains tomorrow. ( 假如明天下雨，我就不去動物園。) you can come to the party if you don’t wear jeans.（ 如果你不穿牛仔褲，你就能來舞會。）” 這個學期又在本單元見到了似曾相識的同樣由if引導的句子，比如：“if i won the lottery, i would give it to medical research. （ 假如我贏了彩票的話，我就捐給醫學研究。） if i were you, i would wear jeans and t-shirt.（ 如果我是你，我就穿牛仔褲和t恤。）”這兩個單元學到的句子都是由if引導的。那么，它們有什么區別呢？對了，分兩種情況：

1.something may possible happen 某事發生的可能性較大。這種情況，有個十三字口訣：“主將從現，主過將從過，主現從現”。即主句是一般將來時，從句用一般現在時；主句用過去將來時，從句用一般過去時；當主句中有can/can’t的話，則從句用一般現在時。例如：

if he has time, he will come tomorrow.

if she finishes early, she can come back early.if you don’t do homework, the teacher will scold you.

2.it is just imaginary, and nothing will happen 某事只是想象的，并不會發生，或者發生的可能性很小。則要用我們常說的虛擬語氣。例如：

if he were kind, he would help me with it. (he isn’t.)

if i had more money, i would buy all of them. (i don’t.)

if he were generous, he would give us a good treat. (he isn’t.)

if you were tired, you would find a good job. (you aren’t.)if i were you, i would buy the dearest one. ( i am not.)任務設計任務i.  請用正確的形式填空。

1. if i come, i ________ ( see ) you.2. if it is fine, we______( go ) for a walk.3. if it rained, they _________ ( stay ) at home.4. you will spoil it if you ______ ( not be ) careful.5. we would be very much pleased if you _____( come ).6. will you help me if i _____ ( need ) you.

7. they will get wet if it _____ ( rain ).8. what a pity i haven’t got my car. if i had, i _________( take ) you to the airport.9. we would answer if we _____( can ).10. if you eat too much, you ______( get ) ill.