be动词的过去式 ->was/were
am/is => was
are => were
过去式be动词标识“过去时间发生的状态”
例：（现在式）He is busy now.
（过去式）He was busy then.
- 时间副词改变，动词也必须改变
（现在式）My parents are at home now.
（过去式）My parents were at home yesterday.
be动词（过去式）的否定词 =>主词 + was/were + not ...
例 Mr. Brown was a vet.布朗先生以前是个兽医。
否定句：Mr. Brown was not a vet.
- 过去发生的事情，现在不是了。
Joe and Brain were in the living room at that time.
否定句：Joe and Brain were not in living room at that time.
be动词（过去式）的疑问句
肯定句：主词 + was/were ...
疑问句：Was/Were + 主词...?
例：Wendy was in the seventh grade last year.
疑问句：Was Wendy in the seventh grade last year?
答句：Yes,主词 + was/were.
No,主词 + was/were not.
例：Were you a pianist? (piano) 钢琴家
Yes,I was./No,I wasn't.
一般动词的过去式=>规则变化
规则变化 =>+ed [t] [d] [ɪd]
原形动词 + ed 例：helped\spelled\wanted
原形动词字尾有 e + d 例：love->loved dance->danced
原形动词为子音 + 短母音 + 子音 =》重复字尾 +ed
例：stopped planned
原形动词字尾为子音 + y =>去y + ied
例：study - studied / cry - cried
*现在式 去y + ies
*形容词 去y + ier （比较级）
不规则变化 例：eat - ate / read - read
ride - rode / come - came / go - went / have - had
see - saw / teach - taught / give - gave / take - took
例：I walk to school every day.
过去式：I walked to school yesterday.
- 动词跟着时间来改变 这个就是时态的变化
Mother goes to a supermarket every morning.
过去式：Mother went to a supermarket yesterday morning.
- 主词为第三人称单数时，过去式动词不须加s
一般动词（过去式）的否定 =>须用助动词did
肯定句：主词 + 一般动词（过去式）...
否定句：主词 + did not + 原形动词...
例：He called you last night.
否定句：He didn't call you last night.
My sister and I watched TV all day yesterday.
否定句：My sister and I didn't watch TV all day yesterday.
我和姐姐昨天并非看了一天电视。
比较：否定句（过去式）
be动词=》She was at home.
She wasn't at home.
一般动词 =》She studied English.
She didn't study English.
一般动词的疑问句：
肯定句：主词 + 一般动词（过去式）...
疑问句：Did + 主词 + 原形动词...
例：His friends went to that movie last week.
疑问句：Did his friends go to that movie last week?
Grace wrote a letter to David.
疑问句：Did Grace write a letter to David?
答句：Yes,she did./No,she didn't.
比较：疑问句（过去式）
be动词=》He was sick.
Was he sick?
一般动词=》He did his homework.
Did he do his homework?
do/does（现在） did（过去）
- 一般动词 - 做
- 助动词 （+原形动词）
学习笔记：谢孟媛英语初级文法完美版视频课程
