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人教PEP版六年级下册Unit 4 Then and now
一般过去时和一般现在时语法专项训练（含解析）
一般现在时（现在/经常/常态）
一. 用法
1. 现在的状态、事实
2. 经常性、习惯性动作
3. 客观真理
二. 时间标志词（看到就用一般现在时）
now, every day/week/year, often, usually, always, sometimes, on Sundays, at weekends
三. 句子结构
（1）be 动词型
肯定：主语 + am / is / are + ...
否定：主语 + am/is/are + not + ...
疑问：Am/Is/Are + 主语 + ...
（2）实义动词型
肯定：主语非三单（I/you/we/they）+ 动词原形
主语三单（he/she/it/单数人名）+ 动词三单（+s/es）
否定：主语非三单 + don’t + 动词原形
主语三单 + doesn’t + 动词原形
疑问：Do + 非三单主语 + 动词原形...
Does + 三单主语 + 动词原形...
四. 动词三单变化规则
1. 一般直接 +s：play→plays, like→likes
2. s/x/ch/sh/o 结尾 +es：watch→watches, go→goes
3. 辅音+y → 变y为i+es：study→studies
4. 不规则：have→has
一般过去时（过去/以前/那时）
一. 用法
1. 过去某个时间发生的动作
2. 过去的状态、习惯
3. 过去和现在对比（Unit 4 核心）
二. 时间标志词（看到就用一般过去时）
then, before, yesterday, last week/year/night, ... ago, just now, in 2020
三. 句子结构
（1）be 动词型肯定：主语 + was / were + ...
was：主语单数（I/he/she/it）
were：主语复数（we/you/they）
否定：主语 + was/were + not + ...
疑问：Was/Were + 主语 + ...
（2）实义动词型
肯定：主语 + 动词过去式（+ed/不规则）
否定：主语 + didn’t + 动词原形
疑问：Did + 主语 + 动词原形...
四. 动词过去式变化规则
1. 一般直接 +ed：play→played, clean→cleaned
2. 以 e 结尾 +d：live→lived, like→liked
3. 辅音+y → 变y为i+ed：study→studied
4. 重读闭音节双写尾字母 +ed：stop→stopped
五. Unit 4 高频不规则过去式（必背）
is→was　are→were　go→went　do→did
have→had　see→saw　get→got　read→read
run→ran　eat→ate　say→said　find→found
can→could　can’t→couldn’t
Unit 4 综合练习题（全面版）
一、写出下列动词的三单形式 & 过去式
1. go → _______ → _______ 2. do → _______ → _______
3. have → _______ → _______ 4. play → _______ → _______
5. like → _______ → _______ 6. live → _______ → _______
7. read → _______ → _______ 8. see → _______ → _______
9. run → _______ → _______ 10. study →______ → _______
二、用 am/is/are/was/were 填空
1. I _______ tall now. I _______ short before.
2. He _______ a pupil now. They _______ pupils too.
3. She _______ quiet then. Now she _______ active.
4. There _______ a gym in our school now.
5. There _______ no gym in our school before.
6. _______ you at home yesterday
7. My parents _______ young then. Now they _______ old.
三、用所给动词的适当形式填空
1. I often _______ (watch) TV. I _______ (watch) TV last night.
2. He _______ (get) up at 7:00 every day. Yesterday he _______ (get) up at 6:30.
3. They _______ (not play) football now. They _______ (not play) football yesterday.
4. She _______ (can) swim now. She _______ (can) swim two years ago.
5. My father _______ (read) newspapers every morning. He _______ (read) a newspaper yesterday morning.
6. There _______ (be) a small tree before. Now there _______ (be) a big tree.
7. Before I _______ (not like) English. Now I _______ (like) English very much.
8. He usually _______ (go) to school by bike. Last week he _______ (go) to school on foot.
四、单项选择
( ) 1. I _______ short then. Now I _______ tall.
A. was; am B. am; was C. were; is
( ) 2. She _______ to music every day.
A. listen B. listens C. listened
( ) 3. They _______ badminton yesterday.
A. play B. plays C. played
( ) 4. _______ you often go to school on foot
A. Do B. Did C. Are
( ) 5. _______ he have a computer before
A. Do B. Did C. Does
( ) 6. There _______ many trees in the park now.
A. is B. was C. are
( ) 7. I _______ ice-skate last winter.
A. can B. could C. couldn’t
( ) 8. My father _______ very fast before.
A. run B. runs C. ran
( ) 9. He _______ like dogs before. Now he likes dogs.
A. don’t B. didn’t C. doesn’t
( )10. Before I _______ in a small village. Now I _______ in a big city.
A. live; live B. lived; lived C. lived; live
五、按要求完成句子
1. I am a student.（用 then 改写）
I _______ a student then.
2. They go to school by bus.（用 yesterday 改写）
They _______ to school by bus yesterday.
3. He likes dogs.（否定句）
He _______ _______ dogs.
4. She saw a film last night.（一般疑问句）
_______ she _______ a film last night
5. There was a small house.（复数句）
There _______ some small _______.
6. I could run fast before.（否定句）
I _______ run fast before.
7. They were active then.（一般疑问句）
_______ they active then
8. Now he likes playing badminton.（用 before 改写）
Before he _______ playing badminton.
答案+详细解析
一、动词变形
1. goes; went
2. does; did
3. has; had
4. plays; played
5. likes; liked
6. lives; lived
7. reads; read
8. sees; saw
9. runs; ran
10. studies; studied
二、be 动词填空
1. am; was
2. is; are
3. was; is
4. is
5. was
6. Were
7. were; are
三、动词适当形式
1. watch; watched
2. gets; got
3. don’t play; didn’t play
4. can; could
5. reads; read
6. was; is
7. didn’t like; like
8. goes; went
四、单项选择
1.A 2.B 3.C 4.A 5.B 6.C 7.B 8. C 9.B 10.C
五、句型转换
1. was
2. went
3. doesn’t like
4. Did; see
5. were; houses
6. couldn’t
7. Were
8. liked

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