II Word study: Write the new words formed by adding the prefixes to the base words below. Then write what the new word means.
1. im + possible =
2. un + comfortable =
3. ill + legal =
4. in + correct =
5. ir + regular =

1. impossible; not possible
2. uncomfortable; not comfortable
3. illegal; not legal
4. incorrect; not correct
5. irregular; not regular

或：
1.impossible 不可能的
2.uncomfortable 不舒服的
3. illegal 非法的
4. incorrect 不正确的
5. irregular 不规则的

Ⅰ Complete the sentences with the right forms of the following phrases.
and so on challenge... to copy down keep a promise order sb. to do sth.
1. My mother clean my bedroom just now.
2. This shop sells clothes, shoes, hats .
3. The teacher wanted us the sentences in our exercise books.
4. It is easier to make a promise than to .
5. She me play another tennis game.

1. ordered me to
2. and so on
3. to copy down
4. keep a promise
5. challenged; to

1. 句子中有"just now"，表示一般过去时，"order sb. to do sth."符合句意，order的过去式为ordered。
2. 根据句意，这里表示列举的省略，"and so on"表示“等等”，符合语境。
3. "want sb. to do sth."是固定搭配，"copy down"有“抄下”之意，符合老师让我们抄写句子的语境。
4. "make a promise"与"keep a promise"相对应，根据语境和比较结构，这里用"keep a promise"。
5. "challenge... to..."表示“挑战某人做某事”，这里描述过去的动作，用过去式challenged。