adverb [时间副词]以前，从前
- The letter came a few days ago.
adjective [原级]以前的
- She was hired three years ago.
只能放在一般过去时态中！
a week \ a month \ a year … ago
她以前很苗条。
She was slim ago. ago的前面应该是一个时间的范围
She was slim before. ✓
adverb [时间副词]以前，从前
adjective [原级]以前的
a week \ a month \ a year … ago
She was slim ago. ago的前面应该是一个时间的范围
She was slim before. ✓