一、根据首字母及句意写出完整单词。
1. A bird can fly very h , but a duck can't.
2. It's raining hard. Remember to take an u !
3. It's so cold outside! You should wear one more s .
4. In s , it's hot in Chengdu and we like going swimming.
5. There are four s in a year, spring, summer, autumn and winter.

一、1. high 2. umbrella 3. sweater 4. summer 5. seasons

翻译:
一、根据首字母及句意写出完整单词。
1. 鸟能飞得很高，但鸭子不能。
2. 雨下得很大。记得带一把雨伞！
3. 外面太冷了！你应该多穿一件毛衣。
4. 在夏天，成都很热，我们喜欢去游泳。
5. 一年有四个季节，春天、夏天、秋天和冬天。

二、从方框中选出适当的单词，用其正确的形式补全句子。

1. Chengdu welcomes lots of every day.
2. On days, we must drive more carefully.
3. Nine is a number in China so all people like it.
4. There is much rain and lightning in weather.
5. — The temperature is -20℃.
— Yes, we can do nothing but stay in in such weather.
6. It is raining , but the policemen are still on duty in the street.
7. In spring, it is often windy and . It's a wonderful time to fly a kite.

二、1. tourists 2. snowy 3. lucky 4. stormy 5. freezing 6. heavily 7. sunny

翻译:
二、从方框中选出适当的单词，用其正确的形式补全句子。
1. 成都每天迎接大量的游客。
2. 在下雪天，我们必须更小心地开车。
3. 在中国，9是一个幸运数字，所以所有人都喜欢它。
4. 暴风雨天气中有很多雨和闪电。
5. ——温度是零下20摄氏度。
——是的，在这样寒冷的天气里我们除了待在室内别无他法。
6. 雨下得很大，但警察们仍然在街上执勤。
7. 在春天，天气常常多风且晴朗。这是放风筝的绝佳时机。

三、语法 聚焦 单元语法专项练习。
1. 用所给单词的适当形式补全短文。
In (1) (rain) weather, we can watch the (2) (rain) and we can enjoy the (3) (snow) in (4) (snow) weather. But can we see the wind? You will say no, but it (5) (blow) all year round.
We can't see the wind, but we can feel it. When we (6) (sit) under a tree on a hot summer day, the wind can cool us off. When we (7) (take) a walk on a winter morning, the wind (8) (make) us feel cold like ice.
We can't see the wind, but we can hear it. Listen! The leaves (叶子) (9) (sing) in the autumn wind. When the wind blows hard, it (10) (sound) like a train.
We can't see the wind, but we can see what it (11) (do). Look! The flags (12) (dance) in the spring wind. The wind can make things easy. Sometimes it (13) (help) us go quickly on a bike and it makes the boat drive fast on the river. The wind can make things difficult. Some- times it can be difficult to walk in the strong wind. Very big wind can cause problems — it can blow down trees and some houses. Then the people and animals (14) (lose) their homes.
The wind makes things fun and it makes things bad. What do you think of the (15) (wind) weather?
2. 按要求补全句子，每空一词(含缩写词)。
(1) How is the weather in Chengdu? (改为同义句)
in Chengdu?
(2) It's very hot in Sanya these days. (对画线部分提问)
in Sanya these days?
(3) These tourists are playing beach volley-ball. (对画线部分提问)
these tourists ?
(4) Jack and Bob are building a snowman. (改为一般疑问句并作肯定回答)
— Jack and Bob ?
— , .
(5) The sun rises every day. (用 now 改写句子)
The sun now.

三、1. (1) rainy (2) rain (3) snow (4) snowy (5) blows (6) sit (7) take (8) makes (9) are singing (10) sounds (11) is doing (12) are dancing (13) helps (14) (will) lose (15) windy
2. (1) What's the weather like
(2) How's the weather
(3) What are; doing
(4) Are; building a snowman; Yes; they are
(5) is rising

翻译:
### 三、语法聚焦 单元语法专项练习。
1. 用所给单词的适当形式补全短文。
在（1）____（下雨的）天气里，我们可以看（2）____（雨），并且在（4）____（下雪的）天气里我们可以欣赏（3）____（雪）。但是我们能看见风吗？你会说不能，但它（5）____（吹）一整年。
我们看不见风，但我们能感觉到它。当我们在炎热的夏日（6）____（坐）在树下时，风能使我们凉爽。当我们在冬日的早晨（7）____（散步）时，风（8）____（使）我们感觉像冰一样冷。
我们看不见风，但我们能听到它。听！叶子在秋风中（9）____（唱歌）。当风猛烈地吹时，它（10）____（听起来）像一列火车。
我们看不见风，但我们能看到它（11）____（正在做）什么。看！旗帜在春风中（12）____（跳舞）。风能使事情变得容易。有时它（13）____（帮助）我们骑自行车快速前行，并且它能使船在河上快速行驶。风能使事情变得困难。有时在强风中行走会很困难。非常大的风会造成问题——它能吹倒树木和一些房屋。然后人和动物（14）____（将会）失去他们的家园。
风使事情变得有趣，也使事情变得糟糕。你觉得（15）____（有风的）天气怎么样？
2. 按要求补全句子，每空一词（含缩写词）。
（1）成都的天气怎么样？（改为同义句）
成都的天气______ ____ ____ ____？
（2）这些天三亚______ ____（天气非常热）。（对画线部分提问）
这些天三亚的天气______ ____？
（3）这些游客______ ____ ____ ____（正在打沙滩排球）。（对画线部分提问）
这些游客______ ____？
（4）杰克和鲍勃正在堆雪人。（改为一般疑问句并作肯定回答）
— 杰克和鲍勃______ ____ ____ ____？
— ____，______ ____。
（5）太阳每天升起。（用 now 改写句子）
太阳______ ____ now。