国产极品在线视频,自拍偷拍欧美视频,国产无限免费av在线播放,日韩黄色一级,97在线免费观看视频,国产精品人人爱,久久综合久久美利坚合众国

was/were加現(xiàn)在分詞是什么時態(tài)

回答
瑞文問答

2024-10-10

它們是be動詞的過去式。
作助動詞:
現(xiàn)在分詞,構(gòu)成過去進行時態(tài):
He was reading.
過去分詞,構(gòu)成被動語態(tài): 
They were defeated.

擴展資料

  作系動詞:

  現(xiàn)在分詞、動名詞短語作表語:

  The film was moving.

  His job was teaching English .

  過去分詞作表語:

  We were moved.

  不定式作表語:

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

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