作业帮英语(since 的用法)
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/22 16:38:45
（ ）1. How long has he been studying English?
_____ he was six years old.
A. Since B. For C. At D. On
解题思路： since 自······以来 since+时间点 since+句子 for+时间段
解题过程：
（A ）1. How long has he been studying English?
_____ he was six years old.
A. Since B. For C. At D. On
最终答案：略
解题过程：
（A ）1. How long has he been studying English?
_____ he was six years old.
A. Since B. For C. At D. On
最终答案：略