【正文】
were having an exam this time last Friday. They were helping people get out of the building when we arrived. 否定句 was/were not + doing (wasn’t=was not。 weren’t=were not) I wasn’t watching TV at 9:00 last night. He was not playing basketball this time yesterday We were not having a party this time last Friday. They were not having an English exam at 5 yesterday afternoon. 一般疑問(wèn)句 Was/Were…doing? Were you watching TV at 9:00 last night? Yes, I was./No, I wasn’t. Was he playing football this time yesterday? Yes, he was./No, he wasn’t. Were they putting out the fire when you arrived? Yes, they were. /No, they weren’t.