介绍:
Day52
1我们应该照顾老人。
We should take care of the old.
2一天服药三次。
Take the medicine three times a day.
3你可以再回答一下这个问题。
You can answer it a second time.
4我快速地吃完早饭后，就着急上学了。
After I had a quick breakfast,I hurried to school.
要点：
①不定冠词表示“每一”的意思，相当于each
②不定冠词用于序数词前，表示“再，又”的意思
③一日三餐前有修饰语时，要加上不定冠词
