学习是一个循序渐进的过程，也是一个不断积累不断创新的过程。下面小编为大家整理了精选初三英语知识点复习：第七单元，欢迎大家参考阅读!

allow动词，“允许;准许”，常用于下列结构中:

1.allow sb. to do sth，允许某人做某事。

The teacher allowed him to go into the classroom.老师允许他进入教室。

2. allow doing sth允许做某事。

We don't allow smoking in public. 我们不允许在公共场合吸烟

3.be allowed to do sth.被允许做某事。

Passengers are not allowed to smoke. 乘客不被允许吸烟。

be worried about为......担心”，与worry about 同义

Mothers are always worried about their children. =Mothers always worry about their children.

妈妈们总是为她们的孩子担心。

safety不可数名词，意为“安全;安全性”，其反义词是danger

For your own safety, please do not smoke inside the plane.为了你自身的安全，请不要在飞机上吸烟。

1. Teenagers should not be allowed to smoke. A D

2. Sixteen-year-olds should be allowed to drive. A D

3. Students must not be allowed to have part-time jobs. A D

4. Sixteen-year-olds should be allowed to get their ears pierced. A D

5. Teenagers should be allowed to choose their own clothes. A D

不应该允许青少年抽烟。

应该允许16岁的青少年开车。

不应该允许学生做兼职工作。

应该允许16岁的青少年扎耳洞。

应该允许青少年选择他们自己的衣服

part-time形容词，“兼职的”，其反义词是full-time，“全职的”，

have part-time jobs 做兼职工作

以上就是精品学习网为大家整理的精选初三英语知识点复习：第七单元，怎么样，大家还满意吗?希望对大家的学习有所帮助，同时也祝大家学习进步，考试顺利!

相关链接：

2015-2016学期九年级英语知识点整理：第六单元 

人教新课标初三英语知识点归纳：Unit 6 When was it invented