2019上半年英语六级语法知识:用一般过去时代替完成时
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英语六级语法知识:用一般过去时代替完成时
1)两个动作如按顺序发生,又不强调先后,或用then,and,but 等连词时,多用一般过去时。
When she saw the mouse,she screamed.
My aunt gave me a hat and I lost it.
2 ) 两个动作相继发生,可用一般过去时;如第一个动作需要若干时间完成,用过去完成时。
When I heard the news, I was very excited.
Our teacher told us that Columbus discovered America in 1492.
英语六级语法知识:将来完成时
1) 构成will / be going to do sth.
2) 概念
b. 动作完成:表示将来某一时或另一个将来的动作之前,已经完成的动作或一获得的经验。
They will have been married for 20 years by then.
You will have reached Shanghai by this time tomorrow.
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