九年级上册英语是英语学习中的重要阶段，阅读理解和听力测试难度有所增加。想要取得好成绩，必须在单词量上下功夫。
1. Maintain
维护，保养。例如：We need to maintain the air conditioner.
2. Awkward
尴尬的。例如：I felt awkward when I saw my ex-boyfriend.
3. Shatter
破碎。例如：The glass was shattered when it fell on the ground.
4. Exchange
交换。例如：I exchanged my old comic book for a new one with my friend.
5. Crucial
关键的。例如：Getting a good grade is crucial for me to get into university.
这五个单词是九年级上册英语必须掌握的。大家不妨写下来反复背诵，提高记忆和掌握程度。
