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教
学
过
程
Step 1 Warming up
1.Chant
I was short. Now I am tall.
She was fat. Now she is thin.
He was cute. Now he is cool.
It was small. Now it is big.
They were young. Now they are old.
You were so naughty. But you were cute.
(复习不同人称后was 和were的用法)
观看Activity 1，学习wasn’t 和weren’t。
T:What is this?
S:It’s a butterfly.
T:Is it beautiful?
S:Yes.
T:It is very beautiful. Was it beautiful then? Let’s watch a video.
(运用希沃白板逐步展示蝴蝶的生长发育过程，看完视频后引出wasn’t，教授wasn’t=was not,以及wasn’t的发音）
出示一些过去和现在的对比照片，引导学生用wasn’t进行描述。
在练习中引出生词dirty 和clean，让学生在语境中习得生词的意思。
出示一对好朋友的对比照片，引出weren’t，教授weren’t=was not,以及weren’t的发音.
出示一些过去和现在的对比照片，引导学生用weren’t进行描述。
练习：连线题（找出is, are, isn’t,aren’t的过去式）
is---_____ sin’t_______ are_______ aren’t________
游戏：唱反调(写出下列句子的否定句)
It was clean. 2.He was strong. 3.She was shy.
____________ ____________ ____________
You were clever. 5.They were dirty.