今天我们继续复习巩固be动词的过去时。请复习以下句子：

She was your girlfriend.（她以前是你的女朋友）She wasn’t your girlfriend.（她以前不是你的女朋友）Was she your girlfriend?（她以前是你的女朋友吗）They were best friends.（他们曾是最好的朋友） They weren’t best friends.（他们不曾是最好的朋友） Were they best friends?（他们曾是最好的朋友吗）I was in Shanghai last week.（我上周在上海）I wasn’t in Shanghai last week.（我上周不在上海）Was I in Shanghai last week?（上周我在上海吗）You were in New York.（你以前在纽约）You weren’t in New York.（你以前不在纽约）Were you in New York?（你以前在纽约吗）请试着回答以下几个问题：Were you in New York last month?（你上个月在纽约吗）Was your mother at home last night?（昨晚你妈妈在家吗）Was your father in Shanghai last week?（上周你爸爸在上海吗）Were you in Changsha last week?（上周你在长沙吗）