畅吃无阻
表示一般过去式的动词通常用动词的过去式形式来表示,而动词的过去式是在动词原形的基础上变化的.动词的过去式可分为规则动词和不规则动词.规则动词的过去式变化如下：(1)一般情况下,动词词尾加 ed ,如：work—worked; play—played;want— wanted; act—acted(2)以不发音的 e 结尾动词,动词词尾加 d,如：live—lived; move—moved; decide—decided; decline—declined; hope—hoped;(3)以辅音字母 + y结尾的动词,把y变为i 再加ed,如：studied tried copied justified cried carried embodied emptied(4)以一个辅音字母结尾的重读闭音节动词,双写词尾辅音字母,再加 ed,如：stopped begged fretted dragged dropped planned dotted dripped(5)注：不规则动词的过去式变化规律性不强,须多加记忆.go - went,make - made,get - got ,buy - bought ,come - came ,fly-flew ,is/am-was,are-were ,see-saw,bring-brought,do-did,teach-taught, think-thought, say-said,sit-sat. read-read, spend-spent, eat-ate,give-gave,sit-sat,tell-told,write-wrote,feel-felt,find-found,hear-heard,know-knew,put-put,grow-grew,take-took,catch-caught,come-came,become-became,swim-swam,sweep—swept,sing—sang,draw—drew,以上的(1)至(4)条中的发音均有改变,具体分别有/d/ /t/ /id/.而不规则动词的过去式的发音则略有不同,但是有些还是按照一定规律变化的.如以上的：make - made,get - got ,buy - bought ,come - came ,fly-flew ,bring-brought,teach-taught, think-thought, say-said,sit-sat. read-read, spend-spent,give-gave,tell-told,write-wrote,feel-felt,find-found,hear-heard,know-knew,put-put,grow-grew,take-took,catch-caught,come-came,become-became,swim-swam,sweep—swept,sing—sang,draw—drew.仔细看一看,能发现它们的一些变化规律,也就是说不需要死记硬背这些过去式,知道了原型和变化规律,就可以写出来了.有的变化部分读音也是有规律的.分类记忆是对学习过去式很有帮助的!编辑本段用法：(1)表示过去某一时刻或某一段时间内所发生的动作或情况,通常一般过去式带有表示动作时间状语的词,词组或从句,如 yesterday, the day before last, last week, two days ago 等,上下文清楚时可以不带时间状语. I worked in that factory last year. 去年我在那一家工厂工作. I went to the Tian Long Mountain yesterday. 昨天我们去了天龙山.一般过去时的用法一.概念：一般过去时是表示在过去的时间里发生的动作或状态,通常与表示过去的时间状语连用.二.时间状语：yesterday, the day before yesterday, two days ago, long long ago,a minute ago,last year(week, month), just now, at that time, in those days.三.过去时的用法：1.有确定的过去时间状语时要用过去式.例：We had a good time last week.2.表示过去连续发生的动作时,要用过去式.例：The boy closed the door, turned off the window, and then went to bed.3. 表示过去一段时间内经常或反复的动作,要用过去式.例：She often came to help me at that time.四.一般过去式的构成形式：☆Be动词的过去式： (1)肯定句：主语+ be动词的过去式(was, were)例：He was ill yesterday. She was nine two years ago.They were my students long long ago.(2)否定句：主语+ be动词的过去式(was, were)+ not例：He was not ill yesterday.She was not nine two years ago.They were not my students long long ago.(3)一般疑问句：直接把be动词提到句首.例：Was he ill yesterday?肯定回答：Yes, he was.否定回答：No, he wasn't.Was she nine two years ago? Yes, she was. / No, she wasn't.Were they your students long long ago? Yes, they were. / No, they weren't.☆实意动词的过去式：(1)肯定句：主语+动词的过去式例：He played football last week.She watched TV last night.(2)否定句：主语+ did not +动词原形例：He did not play football last week.She didn’t watch TV last night.(3)一般疑问句：Did +主语+动词原形 例：Did he play football last week?回答：Yes, he did./ No, he didn't.Did she watch TV last night?回答：Yes, she did. / No, she didn’t.五.动词变过去式的几种常用规则：1.一般动词直接+ ed;例：look--looked want--wanted listen --listened2.以e结尾的词直接+ d;例：live--lived phone--phoned3.以辅音字母加y结尾, 变y为i加ed;例：try--tried study--studied4.重读闭音节结尾的,词尾只有一个辅音字母,双写词尾辅音字母+ ed;例：stop--stopped plan--planned5.不规则动词: 动词由原形转变为过去式时不按词尾加“-ed”之变化规则者叫做不规则动词.小学常见的动词不规则过去式如：是be/is/am/are- was, 是are- were, 来come-came, 去go- went, 有have- had, 做/干do- did, 做make- made 读read- read, 放put- put, 切割cut- cut,写write- wrote, 带走take- took, 买buy- bought, 带来bring- brought,想think- thought, 看见see- saw, 说say- said, 说话speak- spoke,打破break- broke, 得到get- got, 跑run- ran, 告诉tell- told,唱sing- sang, 喝drink- drank, 吃eat- ate, 游泳swim- swam,开始begin- began, 偷steal- stole, 遇见meet- met, 卖sell- sold, 坐sit- sat,跑run-ran,读read-read,想要want-want,知道know/known,fall-fell等等表示过去某一时刻或某一段时间内所发生的动作或情况,通常一般过去式带有表示动作时间状语的词,词组或从句,如 yesterday, the day before last, last week, two days ago 等,上下文清楚时可以不带时间状语. I worked in that factory last year. 去年我在那一家工厂工作. I went to the Tian Long Mountain yesterday. 昨天我们去了天龙山.I stayed at home,yesterday.昨天,我整日呆在家里.(2)一般过去时态：表示过去某一时间所发生的动作或存在的状态.谓语动词要用一般过去式.时间标志：yesterday(昨天), last weekend(上周), last month(上个月), last year(去年), two months ago(两个月前), the day before yesterday(前天),in 1990 (在1990年), in those days (在那些日子里)等表示过去的时间状语.如：I was born in 1990. (我出生在1990年).When did you go to the park? (你是什么时候去的公园).I went to the park last weekend. (我是上周去的公园)在上面的句子中第一句属于be动词的一般过去时态;第二句和第三句属于实义动词go的一般过去时态.1. Be 动词的一般过去时态在没有实义动词的句子中使用be动词, am is 的过去式为was; are的过去式为were.构成：肯定句：主语+was (were) +表语如：I was late yesterday. (昨天我迟到了.)否定句：主语+was (were) +not+表语如：We weren't late yesterday. (我们昨天没迟到)疑问句：Was (Were) +主语+表语如： Was you sick yesterday? (你昨天病了吗?)肯定回答： Yes, I was. (是的,我病了.)否定回答： No, I wasn't. (不,我没病.)特殊疑问句：特殊疑问词+was (were) +主语+表语如：When were you born? 你是什么时候出生的?
小墩子921
is过去式是was，它是一个动词，是be动词的一种，意思为“是、存在”。
它的美式读法是[ɪz]，英式读法是[ɪz]，常放在其他词后缩写为 's
造句：This is a book.（这是一本书）。
1、is基本含义
be 的第三人称单数现在时形式，常放在其他词后缩写为-’s;
[例句]This is the one major drawback of the new system.
这是新系统的一大弊端。
过去式：was
2、was双语例句
jiajia1994
英语中＂是＂的单数是什么？它的单数形式是随着主语变化的，第一人称单数主语是＂I ＂，＂是＂就是 am，过去式是was。第二人称单数主语是＂you＂，＂是＂就是 are，过去式是were。第三人称单数主语是＂he，she，it，＂，＂是＂就是 is, 过去式就是was。
帅哥小蜜
is过去式是was，它是一个动词，是be动词的一种，意思为“是、存在”。
它的美式读法是[ɪz]，英式读法是[ɪz]，常放在其他词后缩写为 's，造句：This is a book.（这是一本书）。
is基本含义
be 的第三人称单数现在时形式，常放在其他词后缩写为-’s;
[例句]This is the one major drawback of the new system.
这是新系统的一大弊端。
过去式：was
was双语例句
The system was state of the art.
这一系统是当时最先进的。
It was a time of peak demand for the product.
那是对该产品需求最旺的时期。
Much of the form was not applicable to me.
表格中很多部分不适用于我。
For a long time his death was concealed from her.
他的死瞒了很长时间都没告诉她。
She was not only intelligent but also very musical.
她不仅聪明，而且极具音乐天分。
