在学习英语的过程中，掌握一些常用的短语是非常重要的。这些短语不仅能够帮助我们更好地理解课文内容，还能提高我们的口语表达能力。以下是八年级上册英语中的一些常见短语，供同学们参考和记忆。

1. look after - 照顾，照料

例句：My mother always looks after me when I am sick.

2. get on well with - 和……相处融洽

例句：She gets on well with her classmates.

3. make mistakes - 犯错误

例句：Everyone makes mistakes, and it's okay to learn from them.

4. have fun - 玩得开心

例句：We had so much fun at the party last night.

5. take care of - 照顾，关心

例句：Please take care of your younger brother while I'm away.

6. be interested in - 对……感兴趣

例句：I am very interested in learning new languages.

7. give up - 放弃

例句：He decided to give up smoking for his health.

8. try one's best - 尽某人最大的努力

例句：We should try our best to achieve our goals.

9. fall asleep - 入睡

例句：After reading for a while, he fell asleep.

10. wake up - 醒来

例句：I usually wake up at six o'clock every morning.

以上短语都是八年级上册英语教材中常见的表达方式。通过日常练习和使用，我们可以逐渐熟悉并掌握这些短语，从而提升自己的英语水平。希望同学们能够在学习过程中多加运用，不断积累，最终达到熟练运用的程度。