was/were加现在分词是什么时态

问题描述

精选答案

它们是be动词的过去式。作助动词：现在分词，构成过去进行时态：He was reading.过去分词，构成被动语态：　They were defeated.

相关介绍：

作系动词：

现在分词、动名词短语作表语：

The film was moving.

His job was teaching English .

过去分词作表语：

We were moved.

不定式作表语：

1）有to不定式：His work that day was to clean the blackboard.

2) 无to 不定式：What he should do is clean the blackboard.