时间状语从句since与before句型比较-标签分类-2025-12-10 02:31
必应
it is 时间段 since从句,
it is +一段时间+ since从句,
since 和 after 区别,
since+一段时间用什么提问,
does since mean before or after,
it is + 一段时间 + since,
when while as 引导时间状语从句的区别,
since+过去时间点用什么时态,
since+一段时间用什么时态,
while when as 引导时间状语从句区别,
it is + 时间段 since + 瞬间动词,
before or since 意味