从课本中找到对应的英文词组,完成练习
1. 一些美妙的夜景 ______
2. 新鲜空气 ______
3. 在非常寒冷的水域里 ______

1. some wonderful night views 2. the fresh air 3. in the very cold waters

一、根据句意,用括号中所给单词的正确形式填空
1. The sandy land in this area is not suitable for ______ (farm).
2. Tigers catch small animals for food. They ______ (most) live on meat.
3. In fact, tunas (金枪鱼) must swim to ______ (breath).
4. —Dr Ma, are there any living things on other ______ (planet)?
—Sorry, I don' know. Living conditions there are different from ours.
5. Trees can keep soil (土壤) in place, so planting as many trees as possible is a good way to stop ______ (flood).

1. farming 2. mostly 3. breathe 4. planets 5. floods

二、根据要求改写句子
1. People use water from rivers for farming and washing. (对画线部分提问)
______ do people ______ water from rivers ______?
2. Someone can live in such difficult conditions. (改为一般疑问句)
______ ______ live in such difficult conditions?
3. As you know, most of a desert is made of sand. (改为同义句)
As you know, a desert is ______ ______ ______ sand.
4. The earth's landscapes are wonderful. (改为同义句)
The earth has ______ ______.
5. There is nothing interesting in today's newspaper. (改为同义句)
There ______ ______ interesting in today's newspaper.

1. What; use; for 2. Can anyone 3. mostly made of
4. wonderful landscapes 5. isn't anything

三、根据中文意思完成句子
1. 寒假的最后一天,我无事可做只能在家看电视。
On the last day of my winter holiday, I had ______.
2. 我五分之三的同班同学都是男孩。______
3. 长江是许多鱼类和动物的家园,比如白鳍豚、江豚等。
The Yangtze River ______, such as the white-flag dolphin, the finless porpoise and so on.
4. 人类没有水就存活不了多久,因此节约水资源很重要。
______, so it's very important to save water resources.

1. nothing to do but watch TV at home
2. Three-fifths of my classmates are boys.
3. is home to lots of/many fish and animals
4. Humans can't survive/live for too long without water