for a long time 的时态搭配

题目

for a long time 的时态搭配
for 介词引导的时间状语常搭配完成时态或过去时态,请帮忙详细解释一下以下各句中的的时态使用的要求.
1.---Did Alan enjoy seeing his old friend yesterday?
--- Yes,he did.He hadn't seen his old friends for a long time.
2.I worked in a foreign trde company for five years.Still,I don't regret having given up the well-paid post.

答案

for a long time 通常用于现在完成时或过去完成时.肯定句中谓语动词要用延续性的.具体分析如下：1.本句中,答句的时态是属于“过去的过去”,故用过去完成时.2.根据句意,说话者已不在原来的公司工作,且已在新公司工作...