课文重点再现（素材）外研版（一起）英语四年级下册

四年级 下册 M 1 祈使句，一般现在时 U 1 Don’t touch the machines, please! U 2 Don’t feed the fish! Don’t sing/ dance/ talk/ play here! The baby is sleeping. -Welcome to our factory, children! -These machines make crisps. -What does this machine do, sir? -It washes the potatoes. Look! This machine cuts the potatoes. Don’t touch the machines, please! They are dangerous. -Sorry, sir. -This machine puts the crisps in the bags. -Wait! You are a very good class. You can each have a bag of crisps. -Oh, thank you, sir! Don’t feed/ touch the baby! Sing for the baby. Play with the baby. Don’t feed the fish! Don’t walk on the grass! Don’t play ball games here! Don’t talk. Don’t write on the books! Be quiet, please! M 2 花钱 U 1 It’s cheap. U 2 It costs one hundred and eighteen yuan. -Dad bought a computer for me yesterday. -Good! Is it expensive? -No, it’s cheap, but it’s beautiful. It’s pink. Have you got a computer? -Yes, I bought one last year. -Is it beautiful? -Well, it’s not beautiful, but it’s helpful. I can send emails to you. I want to buy a pen. I’ve got twenty yuan now. This pen is very nice. Wow! It's expensive. It costs one hundred and eighteen yuan.This pen costs nineteen yuan. It's beautiful. And this pen costs one yuan. It's cheap. I can buy these two pens. It’s time to choose. Which one is good for you to use? M 3 一般过去时，狼来了 U 1He shouted, “Wolf, wolf!” U 2 She went into a shop. Once upon a time, there was a boy. He looked after sheep every day. The boy was bored. One day, the boy ran to the village. He shouted, “Wolf, wolf!” Everyone ran up the hill. There was no wolf. The boy laughed. The next day, the boy ran to the village again. “Wolf, wolf!” he shouted. The people ran up the hill. There was no wolf. The people were angry. Then one day, a wolf came up the hill. The boy ran to the village. But the people didn’t run up the hill. They said, “Don’t tell lies!” The wolf ate all the sheep. The boy learnt a lesson and wouldn’t tell lies again. Tilly is a mouse. Last mont