优化设计三年级上册21课答案,小学同步测控优化设计三年级上册英语答案

优化设计三年级上册21课答案
优化设计三年级上册是小学同步测控的英语教材，其21课是关于购物的话题，让孩子们学会如何进行购物，并掌握相关的英语知识。下面是21课的答案解析。
一、听力训练
1. What does the girl want to buy?
She wants to buy a dress.
2. How much does the dress cost?
The dress costs 150 yuan.
3. What color is the girl's dress?
The girl's dress is blue.
4. What does the boy want to buy?
He wants to buy a toy car.
5. How much does the toy car cost?
The toy car costs 50 yuan.
二、课文训练
1. What does the girl want to buy?
The girl wants to buy a dress.
2. How much does the dress cost?
The dress costs 150 yuan.
3. What color is the girl's dress?
The girl's dress is blue.
4. What does the boy want to buy?
The boy wants to buy a toy car.
5. How much does the toy car cost?
The toy car costs 50 yuan.
6. What does the girl want to buy for her mother?
She wants to buy a bag for her mother.
7. How much does the bag cost?
The bag costs 80 yuan.
8. What does the boy want to buy for his father?
He wants to buy a watch for his father.
9. How much does the watch cost?
The watch costs 200 yuan.
10. What does the girl buy for herself?
She buys a hairpin for herself.
三、语音训练
1. dress
2. blue
3. toy car
4. bag
5. watch
6. hairpin
四、语法训练
1. What does the girl want to buy?
主语：girl 谓语：want to buy
2. How much does the dress cost?
主语：dress 谓语：cost
3. What color is the girl's dress?
主语：girl's dress 谓语：is
4. What does the boy want to buy?
主语：boy 谓语：want to buy
5. How much does the toy car cost?
主语：toy car 谓语：cost
6. What does the girl want to buy for her mother?
主语：girl 谓语：want to buy
7. How much does the bag cost?
主语：bag 谓语：cost
8. What does the boy want to buy for his father?
主语：boy 谓语：want to buy
9. How much does the watch cost?
主语：watch 谓语：cost
10. What does the girl buy for herself?
主语：girl 谓语：buy
五、阅读理解
1. Does the girl want to buy a dress?
Yes, she does.
2. How much does the dress cost?
The dress costs 150 yuan.
3. What color is the girl's dress?
The girl's dress is blue.
4. What does the boy want to buy?
The boy wants to buy a toy car.
5. How much does the toy car cost?
The toy car costs 50 yuan.
六、写作练习
假设你是这位女孩，请你写一封信给你的好朋友，告诉她你今天的购物经历。要求：不少于60个单词。
Dear friend,
Today I went shopping with my family. I bought a beautiful blue dress for 150 yuan. It fits me perfectly and I can't wait to wear it to the party next week. I also bought a hairpin for myself, it's very cute. I bought a bag for my mother, it cost 80 yuan. And my brother bought a toy car for 50 yuan, he was so happy. My father bought a watch for 200 yuan, it looks very cool. It was a fun day and we all enjoyed it very much.
Best wishes,
xxx
以上是优化设计三年级上册21课答案的详细解析，希望对同学们的英语学习有所帮助。