Unit One

1. How often do you exercise ? → How often + 助动词do(does或did) + 主语 + do sth. ? 疑问词how often是问频率(多经常), 在这里助动词do(does或did) 是起帮助构成疑问的作用

Every day / Once a week / Twice a month / Three times a month / Three or four times a month .

2. What do you usually do on weekends ? 第一个do 为助动词, 在这起帮助构成疑问的作用；而第二个 do 则是实义动词。 I usually play soccer .

3. What’s your favorite program ? It’s Animal World .

4. What do students do at Green High School ? 第一个do 为助动词, 在这起帮助构成疑问的作用；而第二个 do 则是实义动词。

5. As for homework , most students do homework every day . as for...意思是“至于；关于”，常用于句首作状语，其后跟名词、代词或动词的-ing形式（即动名词）。如：

As for him，I never want to see him here. 至于他，我永远不希望在这里见到。

As for the story，you'd better not believe it. 关于那故事，你最好不要相信。

6. The results for “ watch TV ” are interesting .

7. Mom wants me to get up at 6:00 and play ping-pong with her . → want to do sth.意思是“想要做某事”；want sb. to do sth.意思是“想要某人做某事”。如：

Do you want to go to the movies with me？你想和我一起去看电影吗？

The teacher doesn't want us to eat hamburgers.老师不想让我们吃汉堡包。

8. She says it’s good for my health . → be good for...表示“对……有益（有好处）”。其反义为：be bad for...。（这里for 是介词，后跟名词、代词或动名词）如：

It's good for us to do more reading. 多读书对我们有好处。

Reading in bed is bad for your eyes.在床上读书对你的眼睛有害。

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