pep小学英语四大基本时态
一、一般现在时
1.一般现在时表示一般情况下经常发生的动作或存在的状态。
常与 usually,
sometimes, often, always等词连用。
2.一般现在时的谓语动词为be动词时，be的变化遵循“我用am, 你用are, is用在
他她它，复数全用are”的规律。
3.一般现在时的谓语动词为其它动词时，当主语为第三人称单数时，动词要用第三人
称单数形式。
如：Mary likes Chinese.玛丽喜欢汉语。
4.动词第三人称单数的变化规则：
（1）一般的动词，直接在词尾加s，如：cook-cooks, like-likes.
（2）以s，x，sh，ch，o等结尾的动词，加es，如：wash-washes, watch-watches, go-goes, do-does.
（3）以辅音字母加y结尾的动词，变y为i, 再加es，如：study-studies.
（4）不规则变化，如：have-has.
否定句：主语+ be + not +其它。
如：He is not a worker.他不是一名工人。
一般疑问句：Be +主语+其它如：Are you a student
（2）行为动词的变化。
否定句：主语+ don't( doesn't ) +动词原形(+其它)。
如：I don't like bread.
当主语为第三人称单数时，要用doesn't构成否定句。
如：He doesn't like PE.
一般疑问句：Do( Does ) +主语+动词原形+其它如：Do you often play chess
当主语为第三人称单数时，要用does构成一般疑问句。
如：Does she like PE
特殊疑问句：疑问词+一般疑问句如：How does your father go to work
现在进行时
1．现在进行时表示现在正在进行或发生的动作。
常与now连用，当句首有look, listen时，也用现在进行时。
2．现在进行时肯定句的基本结构为：主语+ be动词+动词的现在分词（doing，即动词的ing形式)
（1）其中be动词随着主语的变化而变化，be动词包括am, is, are。
（2）动词现在分词的变化规则：
A 一般情况下，直接在动词后加ing，如：cook-cooking.
B 以不发音的e结尾的动词，去掉e后加ing，如：make-making, dance-dancing.
C 以重读闭音节结尾的动词，双写末尾字母后加ing, 如：run-running, swim-swimming.
D 以ie结尾的动词，变ie为y，再加ing, 如：lie-lying, die-dying.
3．现在进行时的否定句：在be动词后面加not。
4．现在进行时的一般疑问句：把be动词提到句首，首字母大写，句尾改成问号
一般过去时
1.一般过去时表示在过去的某一时间里发生的事情，我们用动词的过去式来表示。
常与yesterday, last night，just now, a moment ago等表示过去的时间状语连用。
动词在一般过去时中的变化：
(1)am 和is在一般过去时中变为was。
（was not=wasn’t）
(2)are在一般过去时中变为were。
（were not=weren’t）
(3)带有was或were的句子，其否定句、疑问句的变化和is, am, are一样，即否定句在was或were后加not，一般疑问句把was或were提到句首。
3.句中没有be动词的一般过去时的句子：
否定句：didn’t +动词原形，如：Jim didn’t go home yesterday.
一般疑问句：在句首加did，句子中的动词过去式变回原形，如：Did Jim go home
yesterday
4.动词过去式变化规则：
（1）一般情况下，在动词原形后面加ed，如：cook-cooked.
（2）以不发音的e结尾的单音节词，只加d，如：taste-tasted.
（3）以辅音字母加y结尾的词，变y为i，再加ed，如：study-studied.
(4) 以重读闭音节或r结尾，末尾只有一个辅音字母的词，要双写这个字母后再加ed，如：stop-stopped.
(5)不规则变化，如：go-went, sit-sat.
二十一、一般将来时
1.一般将来时表示将要发生的动作或存在的状态及打算、计划或准备做某事。
常常与tomorrow, next Sunday等时间状语连用。
2.基本结构：
（1）be going to do sth.
（2）will do sth.
3.否定句：在be动词（am, is, are, was, were）或will后加not。
4.一般疑问句:把be动词或will提到句首，some改为any, and改为or，第一、二人
称互换。
范文：
1.过去时：(动词用过去式)
Last Weekend
I was busy last weekend. On Saturday morning, I went to the
park with my grandparents. We went fishing there. In the afternoon,
I played ping-pong with my friends. It was funny! On Sunday
morning, I read books and did my homework at home. In the
afternoon, I went shopping with my mother. In the evening, I
played chess with my father. I was very happy last weekend.
2.将来时: （be going to +动词原形或 will + 动词原形）be going
to=will
Sunday Plan
I am going to have a busy Sunday. In the morning, I am going
to the park with my grandparents. We will go fishing there. In the afternoon, I am going to play ping-pong with my friends. Then we will go to the cinema. In the evening, I am going to read books
and do my homework at home. Then I will play chess with my father.
It will be a funny day!
3.一般现在时：（第一人称：动词用原形）
My Sunday
I have a busy Sunday. In the morning, I often go the park
with my grandparents. Sometimes we go fishing there. In the
afternoon, I often play ping-pong with my friends. Then we go to the cinema. In the evening, I often read books and do my homework at home. Then I often play chess with my father. Sunday is fun!
4.一般现在时：（三单：注意人称、动词+S）
My family
There are three people in my family. My father is a doctor. He likes playing football. He is very kind. My mother is a teacher. She often reads books in the evening. I am a student. I like playing computer games and do sports with my friends. I often go hiking with my parents on the weekend. I love my family very much.。