D Choose and write（选择合适的词组补全句子）
eat up go green turn off
walk to both sides the Earth
1. —What will you do to help
—I’ll go plogging.
2. We will
3. I will
4. Please remember to
5. Sam always writes on
6. When the weather is good, we often
eat up go green turn off
walk to both sides the Earth
1. —What will you do to help
the Earth
?—I’ll go plogging.
2. We will
eat up
the birthday cake this evening.3. I will
go green
from now on. I will use a cloth bag.4. Please remember to
turn off
the lights before you go home.5. Sam always writes on
both sides
of the paper.6. When the weather is good, we often
walk to
school.答案：1. the Earth 2. eat up 3. go green 4. turn off 5. both sides 6. walk to
解析：
【分析】
首先明确给出的6个词组含义：eat up（吃光）、go green（践行绿色环保）、turn off（关掉）、walk to（步行去）、both sides（两边）、the Earth（地球）。解题时需结合每个句子的语境，分析句子缺少的成分，匹配词义相符的词组，确保语义和语法通顺。
【解析】
1. 答句“go plogging（跑步捡垃圾，属于环保行为）”对应帮助的对象，故填the Earth；
2. 宾语是“birthday cake（生日蛋糕）”，需搭配表示“吃光”的词组，故填eat up；
3. 后文“use a cloth bag（用布袋）”是环保行为，对应词组go green；
4. 宾语是“the lights（灯）”，需搭配表示“关掉”的词组，故填turn off；
5. 表示在纸的两侧写字，故填both sides；
6. 表示天气好时步行去学校，故填walk to。
【答案】
1. the Earth 2. eat up 3. go green 4. turn off 5. both sides 6. walk to
【知识点】
动词短语词义辨析、固定搭配
【点评】
本题考查常用动词短语的词义理解及语境运用，难度较低，需准确掌握词组含义并结合句子语境匹配，适合基础阶段学生练习。
【难度系数】
0.3
首先明确给出的6个词组含义：eat up（吃光）、go green（践行绿色环保）、turn off（关掉）、walk to（步行去）、both sides（两边）、the Earth（地球）。解题时需结合每个句子的语境，分析句子缺少的成分，匹配词义相符的词组，确保语义和语法通顺。
【解析】
1. 答句“go plogging（跑步捡垃圾，属于环保行为）”对应帮助的对象，故填the Earth；
2. 宾语是“birthday cake（生日蛋糕）”，需搭配表示“吃光”的词组，故填eat up；
3. 后文“use a cloth bag（用布袋）”是环保行为，对应词组go green；
4. 宾语是“the lights（灯）”，需搭配表示“关掉”的词组，故填turn off；
5. 表示在纸的两侧写字，故填both sides；
6. 表示天气好时步行去学校，故填walk to。
【答案】
1. the Earth 2. eat up 3. go green 4. turn off 5. both sides 6. walk to
【知识点】
动词短语词义辨析、固定搭配
【点评】
本题考查常用动词短语的词义理解及语境运用，难度较低，需准确掌握词组含义并结合句子语境匹配，适合基础阶段学生练习。
【难度系数】
0.3
E Read and circle（读句子，圈出画线部分发音不同的单词）
1. The farm worker has a short horse.
2. The doctor does sport every morning to keep healthy.
3. There is a difficult word in this short story.
1. The farm worker has a short horse.
2. The doctor does sport every morning to keep healthy.
3. There is a difficult word in this short story.
答案：1. worker 2. doctor 3. word
解析：
【分析】本题要求找出每个句子中画线部分（or）发音不同的单词，解题思路是：先回忆每个单词中字母组合or的发音，再对比同一句中三个单词的or发音，找出读音不一致的那个。
【解析】1. 句子1中，worker的or发音为/ɜː/，short的or发音为/ɔː/，horse的or发音为/ɔː/，故发音不同的是worker；
2. 句子2中，doctor的or发音为/ə(r)/，sport的or发音为/ɔː/，morning的or发音为/ɔː/，故发音不同的是doctor；
3. 句子3中，word的or发音为/ɜː/，short的or发音为/ɔː/，story的or发音为/ɔː/，故发音不同的是word。
【答案】1. worker 2. doctor 3. word
【知识点】英语语音，字母组合or的发音
【点评】本题考查常见单词中字母组合or的不同发音，属于基础语音辨析题，需要学生积累常见单词的读音，难度较低。
【难度系数】0.3
【解析】1. 句子1中，worker的or发音为/ɜː/，short的or发音为/ɔː/，horse的or发音为/ɔː/，故发音不同的是worker；
2. 句子2中，doctor的or发音为/ə(r)/，sport的or发音为/ɔː/，morning的or发音为/ɔː/，故发音不同的是doctor；
3. 句子3中，word的or发音为/ɜː/，short的or发音为/ɔː/，story的or发音为/ɔː/，故发音不同的是word。
【答案】1. worker 2. doctor 3. word
【知识点】英语语音，字母组合or的发音
【点评】本题考查常见单词中字母组合or的不同发音，属于基础语音辨析题，需要学生积累常见单词的读音，难度较低。
【难度系数】0.3
F Read and order（连词成句，注意大小写并加标点）选做题
Liu Tao and his family are talking about what to do for Earth Day.
Mum: Earth Day is coming. (1)
(the Earth, let's, to help, do something)
Liu Tao: (2)
(when, I, the tap, I'll, turn off, brush my teeth)
What will you do, Dad?
Dad: I want to save paper. (3)
(the paper, I'll, use, both sides, of)
Liu Tao: That's a good idea. I'll do that too. What about you, Mum?
Mum: I'll use a cloth bag when I go shopping.
Liu Hao: (4)
(my food, I'll, eat up, try to)
Mum: Wonderful! Let's try to do these things every day.
Liu Tao: Sure! I'll start right now.
Liu Tao and his family are talking about what to do for Earth Day.
Mum: Earth Day is coming. (1)
Let's do something to help the Earth.
(the Earth, let's, to help, do something)
Liu Tao: (2)
I'll turn off the tap when I brush my teeth. / When I brush my teeth, I'll turn off the tap.
(when, I, the tap, I'll, turn off, brush my teeth)
What will you do, Dad?
Dad: I want to save paper. (3)
I'll use both sides of the paper.
(the paper, I'll, use, both sides, of)
Liu Tao: That's a good idea. I'll do that too. What about you, Mum?
Mum: I'll use a cloth bag when I go shopping.
Liu Hao: (4)
I'll try to eat up my food.
(my food, I'll, eat up, try to)
Mum: Wonderful! Let's try to do these things every day.
Liu Tao: Sure! I'll start right now.
答案：1. Let's do something to help the Earth.
2. I'll turn off the tap when I brush my teeth. / When I brush my teeth, I'll turn off the tap.
3. I'll use both sides of the paper.
4. I'll try to eat up my food.
2. I'll turn off the tap when I brush my teeth. / When I brush my teeth, I'll turn off the tap.
3. I'll use both sides of the paper.
4. I'll try to eat up my food.
解析：
【分析】
本题为英语连词成句题，需根据所给单词，结合英语句子结构（祈使句、时间状语从句等）调整语序，注意首字母大写和句末标点。解题思路：1. 第一题以let's引导祈使句，先组核心短语，再加目的状语；2. 第二题用when引导时间状语从句，从句可置于主句前或后；3. 第三题按主谓宾结构组合；4. 第四题用try to do的固定结构组合。
【解析】
1. 第一小题：let's引导祈使句，核心短语为do something，目的状语用to help the Earth，组合为Let's do something to help the Earth.
2. 第二小题：when引导时间状语从句，主句为I'll turn off the tap，从句为when I brush my teeth，从句可置于主句前或后，故答案为I'll turn off the tap when I brush my teeth. / When I brush my teeth, I'll turn off the tap.
3. 第三小题：按主谓宾结构，I'll后接use，宾语为both sides of the paper，组合为I'll use both sides of the paper.
4. 第四小题：用try to do结构，I'll try to后接eat up my food，组合为I'll try to eat up my food.
【答案】
1. Let's do something to help the Earth.
2. I'll turn off the tap when I brush my teeth. / When I brush my teeth, I'll turn off the tap.
3. I'll use both sides of the paper.
4. I'll try to eat up my food.
【知识点】
连词成句，祈使句，时间状语从句
【点评】
本题结合环保主题，考察英语基础句型的运用，是英语学习中的常见基础题型，有助于巩固简单句结构的掌握，贴近生活实际。
【难度系数】
0.6
本题为英语连词成句题，需根据所给单词，结合英语句子结构（祈使句、时间状语从句等）调整语序，注意首字母大写和句末标点。解题思路：1. 第一题以let's引导祈使句，先组核心短语，再加目的状语；2. 第二题用when引导时间状语从句，从句可置于主句前或后；3. 第三题按主谓宾结构组合；4. 第四题用try to do的固定结构组合。
【解析】
1. 第一小题：let's引导祈使句，核心短语为do something，目的状语用to help the Earth，组合为Let's do something to help the Earth.
2. 第二小题：when引导时间状语从句，主句为I'll turn off the tap，从句为when I brush my teeth，从句可置于主句前或后，故答案为I'll turn off the tap when I brush my teeth. / When I brush my teeth, I'll turn off the tap.
3. 第三小题：按主谓宾结构，I'll后接use，宾语为both sides of the paper，组合为I'll use both sides of the paper.
4. 第四小题：用try to do结构，I'll try to后接eat up my food，组合为I'll try to eat up my food.
【答案】
1. Let's do something to help the Earth.
2. I'll turn off the tap when I brush my teeth. / When I brush my teeth, I'll turn off the tap.
3. I'll use both sides of the paper.
4. I'll try to eat up my food.
【知识点】
连词成句，祈使句，时间状语从句
【点评】
本题结合环保主题，考察英语基础句型的运用，是英语学习中的常见基础题型，有助于巩固简单句结构的掌握，贴近生活实际。
【难度系数】
0.6