A2
have + V3 + for + khoảng · have + V3 + since + mốc
for 和 since
讲解
for 接时间段的【长度】（for two years, for a week）。since 接开始的【时间点】（since 2020, since Monday, since I was a child）。用于在过去开始、持续到现在的事。 常见陷阱：英语要区分时间段的长度和起点：for five years ✓, since five years ✗。
例句
I have lived here for five years.
我在这里住了五年了。
She has worked here since 2020.
她从2020年起就在这里工作。
We have known each other since school.
我们从上学时就认识了。
He has been busy for a week.
他已经忙了一个星期了。
练习
通过选择题测试你的掌握程度
高效学习“have + V3 + for + khoảng · have + V3 + since + mốc”
语法点“have + V3 + for + khoảng · have + V3 + since + mốc”（for 和 since）是 CEFR 2 级别的重要结构之一。要熟练运用这个结构，你需要弄清楚它的使用语境，并经常练习。
学习小贴士：把例句大声朗读多遍，培养自然的语感反应。然后试着结合自己的生活情境造句。用发音按钮听标准发音并跟着练习。
你也可以查看完整课程“”，更深入地了解相关的语法和词汇。