iwas是什么時(shí)態(tài)

i was后面可以是過(guò)去分詞或動(dòng)名詞。
例句：
I was fighting back the tears.
我強(qiáng)忍住眼淚。
I was shocked at the swearing.
我聽(tīng)到這臟話很震驚。