S: Maybe he will become ill because he has unhealthy drinks.

T: “Because” and “because of” have different uses. Who can tell me the difference between them?

S: Because is used before a sentence and because of is used before a noun.

T: Quite good. A flag for your group. Now let’s practice more. Take out your exercise paper. Part A.

S: (练习)

(设计意图：通过参观动物园，有效检查学生的运用语言知识的情况。)

三、专项操练，精讲点拨

Step3 Practice

T: Have you finished them? Check your answers with your partners.

S: (学生讨论)

T: OK, let’s check the keys together. No1. Read the whole sentence, please.

S: He is too fat, so he has no good suit to wear.

He has no good suit to wear because he is too fat. S: Many tigers died because they lost their homes.

Many tigers died _because_ of losing their homes.

S: We were late because of the heavy rain.

We were late because it rained heavily.

It rained heavily, so we were late.

T: Great! It rained heavily, We can also say it rained cats and dogs. Do you have any problem?

S: No.

T: Let’s go on travelling. Which place would you like to choose?

S: B

T: The Tiger Cave. Are you interested in tigers?

S: Yes.

T: Who can tell us something about tigers?

S: I can. The tiger is one of the most dangerous animals to human beings. It lives in the forest. Many people like to call them the king of forest. Now many tigers are in danger now. So we should protect them.

T: Very good. You did a good job. Boys and girls, do you want to know more about tigers?

S: Yes.

T: Let’s listen to the talk between Miss Zhang and the zookeeper, Mr. Li.

S: (听录音材料)

T: Please choose the right answer according to what you’ve heard. No.1. What do we call the tiger?

S: The king of the forest.

T: No.2 What do hunters kill tigers for?

S: For their fur and bones.

T: Hunters kill tigers for their fur and bones. Tigers are in danger now. What can we do to help them?

S: If we don’t buy tiger fur, hunters won’t kill tigers.

S: Tigers will live happily if we protect them.

T: Look at the two sentences. Can you work out the rule?

T: What tense do we usually use here?

S: The simple present tense.

T: And here we use…

S: The simple future tense.

T: Let’s do more exercises. Look at your paper, Part B.

S: 学生完成练习并讨论答案

T: Which group can tell us the keys?

S: If Linda works hard, she will pass the exam easily.

S: If we don’t protect giant pandas, they will die soon.

S: If a polar bear is hungry, it will catch fish from the water.

S: If she doesn’t be busy, she will have supper with us.

T: Any problem?

S: Yes. We can’t say she doesn’t be busy. We should say “If she isn’t busy, she will have supper with us”.

T: Great! Let’s go on with our visit. Giant Pandas’ House. Are giant pandas lovely?

S: Yes.

T: Who can come here and act a giant panda?

S: I can.

T: Please do what I tell you to do.

First, walk like a giant panda.

Then, climb the bamboo slowly.

Finally, begin to eat bamboo leaves.

S: 做动作

T: Wonderful. Let’s clap for him. A flag for your group.

T: Boys and girls, do you know the growth of a giant panda?

S: Yes.

S: When I was born, I looked like a white mouse.

S: At the beginning, I drank my mother’s milk for up to fourteen hours a day.

S: At 4 months, I started to go outside for the first time.

S: At 6 months, I started to eat bamboo shoots and leaves.

S: Eight months later, I grew into a healthy young giant panda.

T: We have seen monkeys, tigers and giant pandas. What other animals can we see in ShanghaiWildlife Park?

S: We can see cranes.

S: We can see giraffes.

S: We can see bears.