过去完成时怎么用
文章来源:未知 文章作者:enread 发布时间:2021-05-18 09:16 字体: [ ]  进入论坛
(单词翻译:双击或拖选)
“时态(tense)” 是英语语法中的一大难点。尤其是当一个句子中存在不同时态的时候,要想准确地把握句意,就需要理解每个时态的具体用法。我们用过去完成时谈论过去某个时间点之前已经发生的事情。过去完成时的结构是什么?当一句话中,过去完成时和过去时同时出现时,哪一个时态所描述的动作先发生?
 
Hi, everyone, I'm James and today we're going to talk about the past perfect tense – how we form it, and why we use it!
 
"By the time I arrived at the airport, the plane had already left."
 
In this example, 'had left' is the past perfect tense. The structure1 for the past perfect tense is 'had' plus a past participle.
 
There are two past actions – 'arriving at the airport' and ‘the plane leaving'. But which of these happened first?
 
The clue2 is the past perfect tense! The action in the past perfect is the action that always happens first.
 
Because the verb3 'leave' is in the past perfect, 'had left', we know that this action happened first.
 
The action that happens second is often in the past simple tense.
 
In this example: I arrived.
 
When you want to talk about two past actions, one which happened before the other, remember to use the past perfect for the first action, and the past simple for the second.
 
Thanks for joining us for this English In A Minute!
 
用法总结
1 过去完成时的结构是 “had” + 动词过去分词。
 
2 当一句话中有两个在过去不同时段发生的动作时,先发生的动作使用过去完成时,而后发生的动作则常用一般过去时。
 
By the time I arrived at the airport, the plane had already left.


点击收听单词发音收听单词发音  

1 structure PtNw5     
n.结构,构造,建筑物;v.构成;
参考例句:
  • Doctors study the structure of the human body.医生研究人体构造。
  • A flower has quite a complicated structure.一朵花的结构相当复杂。
2 clue pWhyn     
n.线索;提示;词语
参考例句:
  • She will clue you in about this.她将为你提供这方面情况。
  • No clue to his whereabouts has been found.至今没有找到有关他行踪的线索。
3 verb OiywI     
n.[语]动词
参考例句:
  • The sentence is formed from a verb and two nouns.这句子由一个动词和两个名词构成。
  • These are the finite forms of a verb.这些是一个动词的限定形式。
TAG标签: past tense airport
发表评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
验证码:点击我更换图片