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be做谓语，依然是主系表结构 常见构成： 肯定句：主语 + (was/were) + 表语 Jim was a student three years ago. 否定句：主语 +wasn't /weren't+ 表语 Jim wasn't a student three years ago. 一般疑问句：Was /Were + 主语 + 表语 Was Jim a student three years ago ? Yes ，he was. No，he wasn't. 特殊疑问句：特殊疑问词 + 一般疑问句 What was Jim three years ago? (责任编辑：admin) |