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重点语法 过去进行时 do/does 的过去进行时态形式：(was/were) doing do/does 的过去进行时态的被动语态：(was/were) being done 过去将来时态的肯定句、否定句和疑问句形式： 肯定句例句：I was walking down the street when a UFO landed. 否定句例句：I wasn't walking down the street when a UFO landed. 一般疑问句例句：Were you walking down the street when a UFO landed? 特殊疑问句例句：What were you doing when a UFO landed? 动词 when 和 while 的选择：when 后加瞬间动词，while 后加延续性动词。 例句：The boy was walking down the street when the UFO landed. =While the boy was walking down the street, the UFO landed. 重点语法 宾语从句 结构：主语 + 谓语动词 + 宾语从句(主语 + 谓语动词 + 宾语/表语) 1、引导名词性从句的连接词 （1）that：没有含义，在宾语从句中不做成分 （2）whether/if：表示是否，宾语从句中不做成分。 I don't know if /whether he still lives here after so many years. 我不知道这么多年后，他是否还住在这里。 （3）连接代词：what, which, who, whom, whose(在宾语从句中做主、宾、表和定语) 连接副词：where, when, how, why(在宾语从句中做状语) 2、在做宾语从句的题目时应注意时态 （1）当主句是现在时态时，宾语从句可以根据需要使用任何时态。 He tells me that his sister came back yesterday.他告诉我他姐姐昨天回来了。 (责任编辑：admin) |