求英语过去式和过去分词语法的详细讲解如题 本人基础不是很好 希望各位高人为小弟解惑 谢谢了

求英语过去式和过去分词语法的详细讲解如题 本人基础不是很好 希望各位高人为小弟解惑 谢谢了
求英语过去式和过去分词语法的详细讲解
如题 本人基础不是很好 希望各位高人为小弟解惑 谢谢了

求英语过去式和过去分词语法的详细讲解如题 本人基础不是很好 希望各位高人为小弟解惑 谢谢了
一般过去时的用法

1）在确定的过去时间里所发生的动作或存在的状态.
　 时间状语有：yesterday, last week, an hour ago, the other day, in 1982等.
　 Where did you go just now?
2）表示在过去一段时间内,经常性或习惯性的动作.
　 When I was a child, I often played football in the street.
　 Whenever the Browns went during their visit, they were given a warm welcome.　　　　　
3）句型：
　 It is time for sb. to do sth　 "到……时间了"　 "该……了"
　 It is time sb. did sth. "时间已迟了"　 "早该……了"
　 It is time for you to go to bed.　 你该睡觉了.
　 It is time you went to bed.　　　你早该睡觉了.
　 would (had) rather sb. did sth.　表示'宁愿某人做某事'
　 I'd rather you came tomorrow.
4) wish, wonder, think, hope 等用过去时,作试探性的询问、请求、建议等.
　I thought you might have some. 我以为你想要一些.
比较：
　　一般过去时表示的动作或状态都已成为过去,现已不复存在.
　Christine was an invalid all her life.　
　 (含义：她已不在人间.)
　Christine has been an invalid all her life.　
　 (含义：她现在还活着)
　Mrs. Darby lived in Kentucky for seven years.
　 (含义：达比太太已不再住在肯塔基州.)
　Mrs. Darby has lived in Kentucky for seven years.
　( 含义：现在还住在肯塔基州,有可能指刚离去)
　　
注意： 用过去时表示现在,表示委婉语气.
1）动词want, hope, wonder, think, intend 等.
　　　Did you want anything else?
　　　I wondered if you could help me.
2）情态动词 could, would.
　　　Could you lend me your bike?

过去完成时

1） 概念：表示过去的过去
----|-------|-----|---->其构成是had +过去分词构成.
那时以前　 那时　现在　　　　　　
2） 用法
　a.　在told, said, knew, heard, thought等动词后的宾语从句.
　　 She said (that) she had never been to Paris.
　b. 状语从句
　　 在过去不同时间发生的两个动作中,发生在先,用过去完成时；发生在后,用一般过去时.
　　 When the police arrived, the thieves had run away.
　c. 表示意向的动词,如hope, wish, expect, think, intend, mean, suppose等,用过去完成时表示"原本…,未能…"
　　 We had hoped that you would come, but you didn't.
3)　过去完成时的时间状语before, by, until , when, after, once, as soon as.
　 He said that he had learned some English before.
　 By the time he was twelve, Edison had began to make a living by himself.
　Tom was disappointed that most of the guests had left when he arrived at the party.
典型例题　
　 The students ___ busily when Miss Brown went to get a book she ___ in the office.　
A. had written, left　B,were writing, has left　 C. had written, had left　D. were writing, had left
　 答案D. "把书忘在办公室"发生在"去取书"这一过去的动作之前,因此"忘了书"这一动作发生在过去的过去,用过去完成时.句中when表示的是时间的一点,表示在"同学们正忙于……"这一背景下,when所引导的动作发生.因此
前一句应用过去进行时.
注意：　had no … when　　　　　还没等…… 就……
　　　　had no sooner… than　　刚…… 就……
　 He had no sooner bought the car than he sold it.

:过去式是用在一般过去时的,；过去分词用在完成时态的.
过去式用于“一般过去时”
过去分词要和其它成分连用。
1.have has +过去分词 （现在完成时）
2.had+过去分词（过去完成时）
3.be+过去分词（被动语态）