2021学年Unit 4 Save the trees.背景图ppt课件

Unit 4 Save the trees Period 3 Grammar

一、用所给词的适当形式填空

1. Look! She __________ a book.(read)

2. We ___________  at school now.(run)

3. What ________ you ________ (do) now?

4. I ___________an e-mail to my pen pal now.(write)

5. They ____________ (not, water) the flowers now.

二、单项选择

1.It’s eight o’clock. Jim’s family ______TV.

A. is watching          B. are watching           C. watch          D. to watch

2.——______ you ______the window?

——Yes, I am.

A. Do, clean           B. Is, cleaning            C. Are, cleaning    D. Do, cleaning

3.We want _________this book now.

A. reading             B. am reading            C. read           D. to read

4.——Can you help me,Lucy?

  ——Sorry.I_______a report.I must finish it in three minutes.

A.write                B.is writing              C.am writing       D.wrote

5.——Listen! Who_______ in the music room? 

——It must be Jane. She usually_______ at this time every day.

A. sings; sings       B. is singing; is singing    C. is singing; sings   D. sings; is singing

三、适当形式填空

Today is Children's Day. There  1  (be) a show in the zoo. Many children are in the zoo. Look at the animals.They are so cute. The birds   2  (fly) and   3  (sing) in the sky. The tigers   4  (run). The pandas   5  (climb)trees. They are good climbers.The kangaroos   6  (jump).Look at the mother elephant and the baby elephant. The mother elephant   7  (eat) bananas and the baby elephant   8  (drink) water with its trunk. Look, what are those?They are two lions. They   9  (play) with a ball. And the monkeys   10  (swing).

1.   ____ 2.____ 3.____ 4.____ 5.____ 6. ____ 7. ____ 8. ____ 9. ____ 10.______

四、阅读理解

Have you ever really looked at a tree? All trees are big plants. Like all plants, trees have roots. The roots hold trees in the ground. They keep trees from falling over. They bring water and food that trees need to live on.

A tree has a fat stem. We call the tree's fat stem "trunk". Inside the trunk, a tree holds water and food. The water and food go up the trunk to the green leaves. The leaves use sunlight to make more food for the tree.

Trees help us. They help clean the air. They give us food. Fruits, nuts and chocolate all come from trees. Paper, chairs, beds and houses also come from trees. Trees are also important for other living creatures(生物). They provide a home for birds and other animals. Many animals eat part of trees. Be friends with trees! We need trees and trees need us! Often young trees need special care. They need water and protection(保护).

1. What can roots do for trees?

A. To get sunlight to make food.             B. To hold trees in the ground.

C. To bring water and food for trees.        D. Both B and C.

2. A tree's stem can move up ________ to the leaves.

A. food             B. water            C. water and food        D. sunlight

3. Which part of trees can make food for trees?

A. Roots.             B. Stems.            C. Trunks.                D. Leaves.

4. The third paragraph(段落) mainly tells us that___________.

A. trees make food for people               B. trees are important for everyone

C. trees provide a home for animals          D. trees help clean the air

5. Which of the following is WRONG?

A. Big trees don't need water or protection.

B. Part of trees is some animals' food.

C. Trees can make food from sunlight.

D. Trees are a kind of big plants.

答案：

一、1.is reading

2.are running 

3. are，doing

4. am writing

5. are not watering

二、BCDCC

三、1.is       2.are flying       3.singing       4.are running       5.are climbing

6.are jumping     7.is eating     8.is drinking     9.are playing   10．are swinging

四、DCDBA