五年级语法：一般过去时标志词：yesterday(昨天), last (上一个), this morning（今天早上），ago(以前),before (在…之前), in 2002(在2002年) 等用法：表示过去某个时间发生的动作或存在的状态，常和表示过去的时间状语连用。
也表示过去经常或反复发生的动作。
动词过去式变化规则：1．一般在动词末尾加-ed，如：watch-watched, cook-cooked2．结尾是e加d，如：taste-tasted3．末尾只有一个元音字母和一个辅音字母的重读闭音节，应双写末尾的辅音字母，再加-ed，如：stop-stopped 4．以“辅音字母+y”结尾的，变y为i，再加-ed，如：study-studied5．不规则动词过去式：am, is-was, are-were, do-did, see-saw, say-said, give-gave(见附表)句型：1、Be动词在一般过去时中的变化：⑴am 和is 变为was。
否定（was not=wasn’t）⑵are 变为were。
否定（were no t=weren’t）否定句：在was或were后加not 如：He wasn’t at home yesterday.一般疑问句：把was或were调到句首。
如：Was he at home yesterday?特殊疑问词：疑问词＋was(were) ＋主语＋其他？如：Where were you yesterday?2、行为动词在一般过去时中的变化否定句：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?特殊疑问句：⑴疑问词+did+主语+动词原形？如: What did Jim do yesterday?⑵疑问词当主语时：疑问词+动词过去式？如：Who went to home yesterday?练习：一、用was were is are填空1. Today the kitchen tidy and the walls clean.2. Yesterday the bin full and the walls dirty.3. There a football match in our school yesterday.4. There twenty boy students in our class.5. Where you yesterday afternoon? I at home.6. The sink full and the bins not empty.7. They unhappy yesterday.8. I happy this morning.9. The students in the music room.10. My parents at the bank二、选择正确的答案( )1．My father________ ill yesterday．A．isn't B．aren't C．wasn't D．weren't( )2．________ your parents at home last week﹖A．Is B．Was C．Are D．Were( )3．The twins________ in Dalian last year．They________ here now．A．are; were B．were; are C．was; are D．were; was ( )4．________ your father at work the day________ yesterday(前天）﹖A．Was; before B．Is; before C．Was; after D．Is; after ( )5．—Who was on duty last Friday﹖—________．A．I am B．I was C．Yes, I was D．No, I wasn't ( ) 6. They ________ on a trip in February, 2007.A. are goingB. goingC. went( ) 7.We’re going to _____ mountains tomorrow.A. climbB. climbedC. climbing( ) 8. ____ he ____ football two days ago?A. Does, playB. Did, playedC. Did , play( ) 9.----Good afternoon, Miss Lee. How does Mike feel?-----He’s tired. He ____ a lot of work ______.A. does, this morningB. do , this morningC. did , this morning ( ) 10. She watered the flowers ________.A. tomorrowB. sometimesC. yesterday morning( ) 11.What _______ Mike do last weekend?A. doB. doesC. did( ) 12. I ___ my room last Sunday.A. cleanedB. cleanC. am cleaning( ) 13. I often help my mother _____ housework.A. doesB. didC. do( ) 14. _____ you _____ TV last night.A. Do, watchB. Did, watchC. Did, watched( ) 15.---Did your father write an e-mail yesterday？A. Yes, he did.B. Yes, he doesC. No, he don’t三．句型转换1. It was exciting.否定句：_____________________________________________一般疑问句：___________________________________________肯、否定回答：__________________________________________2. All the students were very excited.否定句：_____________________________________________一般疑问句：__________________________________________肯、否定回答：__________________________________________3. They were in his pocket.否定句：_____________________________________________一般疑问句：___________________________________________肯、否定回答：__________________________________________4. Su Hai took some photos at the Sports day.否定句：_____________________________________________一般疑问句：___________________________________________肯、否定回答：__________________________________________5. Nancy went to school early.否定句：_____________________________________________一般疑问句：___________________________________________肯、否定回答：__________________________________________6. We sang some English songs.否定句：_____________________________________________一般疑问句：___________________________________________肯、否定回答：__________________________________________附录：小学常用不规则动词过去式一、不规则动词的过去式的构成1．把动词原形中的i改为a，变成过去式。
如：begin—began，drink—drank，give—gave，ring—rang，sing—sang，sit—sat，swim—swam 2．把重读开音节中的i改为o，变成过去式。
如：drive—drove，ride—rode，write—wrote3．改动词原形中的aw ／ow为ew，变成过去式。
如：draw—drew，grow—grew，know—knew，throw—threw（动词show除外，show—showed）4．动词原形中的e改为o，变成过去式。
如：get—got，forget—forgot5．动词原形中的ee改为e，变成过去式。
如：feed—fed，meet—met6．动词原形中的eep改为ept，变成过去式。
如：keep—kept，sleep—slept，sweep—swept7．动词原形中的eak改为oke，变成过去式。
如：break—broke，speak—spoke8．动词原形中的ell改为old，变成过去式。
如：sell—sold，tell—told9．动词原形中的an改为oo，变成过去式。
如：stand—stood，understand—understood10．以ought和aught结尾，且读音是〔:t〕的过去式。
如：bring—brought，buy— bought，think—thought，catch—caught，teach—taught 11．以ould结尾且读音为〔ud〕的情态动词过去式。
如：can—could，shall—should，will—would12．把动词原形中的o改为a，变成过去式。