Unit2Section2Grammar课件沪教牛津版英语七年级上册

Unit2SchoollifeSection2Exploringandapplyingrules一般现在时一.定义：示通常性、规律性，习惯性、真理性的动作或状态

二.构成：①动词原型

如：Theylikeplaythepiano.

②第三人称单数（主语为第三人称单数）

如：Hesingswell.三.第三人称单数的规则变化：

①一般情况:加s，如：thinks,learns

②sh/ch/x/0/s结尾:加es，

如：watches,miss--misses

③辅音字母+结尾：改y为i再加es，

如：studies,carries

④以o结尾：加es，如：does,goes①表频率：always(总是),usually(通常),often(经常),sometimes(有时),

seldom(极少),hardly(几乎不),never(从不)

如：Heisalwayslate.Iusuallygotoschoolbybus.

注意：频率副词的位置（放在be动词，助动词，情态动

词的后面；放在实义动词的前面）四.标志词②表次数：onTuesdays(每个星期四),everyday(每天),

onceaday(每天一次),twiceaweek(每周两次)

threetimesaweek(每周三次)

如：TomplaysbasketballeverySunday.

IwatchTVtwiceaweek.

注意：1.表次数：先说次数再说星期2.3次及以上借助time的复数形式3.表次数的短语，通常放句末一、单项选择1.Mandylikesplayingbadmintonandsheplaysit________.A.threetimeweeks

B.threetimeaweek C.threetimesaweek D.threetimesweek2.Thecook________foreighthourseveryday.A.working B.works C.worked D.towork3.She______doingsports,soshe______goesswimminginherfreetime.A.likes;often B.likes;hardly C.like;seldom D.like;always表次数：先说次数再说星期且3次及以上借助time的复数形式主语为三单，动词要用第三人称单数形式主语为三单，动词要用第三人称单数形式；often是经常，喜欢运动，所以经常游泳4.---________Annaoftenlateforschool?

---No,she________.A.Does;isn’t B.Is;isn’t C.Is;doesn’t D.Does;doesn’t5.Ben________forschool.He________upearly.A.neverlate;getsalways B.isneverlate;getsalwaysC.isneverlate;alwaysgets D.neverlates;alwaysgetslate为形容词，形容词常与be动词连用；用什么提问就用什么回答频率副词放be动词、情态动词、助动词的后面，放实义动词的前面五.句型转换（改否定句）①判断动词属性

1.若谓语动词为be动词、助动词或情态动词，直接在后面加not

如：Tinaisastudent.→Tinaisnotastudent.Tomcanplaytheguitar.→Tomcannotplaytheguitar.2.若谓语动词为实义动词，则借助do动词(do/does/did).

注意：借助了助动词后，后面的实义动词恢复原形

如：Boblikesplayingchess.→Bobdoesn’tlikeplayingchess.六.句型转换（改一般疑问句）①判断动词属性

1.若谓语动词为be动词、助动词或情态动词，直接提前到

主语前面

如：Tinaisastudent.→IsTinaastudent?Tomcanplaytheguitar.→CanTomplaytheguitar?2.若谓语动词为实义动词，则借助do动词(do/does/did).

注意：借助了助动词后，后面的实义动词恢复原形

如：Boblikesplayingchess.→DoesBoblikeplayingchess?七.句型转换（改特殊疑问句）①选择特殊疑问词②判断动词属性

1.若谓语动词为be动词、助动词或情态动词，直接提前到

主语前面

如：Tomcanplaytheguitar.→WhatcanTomdo?2.若谓语动词为实义动词，则借助do动词(do/does/did).

注意：借助了助动词后，后面的实义动词恢复原形

如：Boblikesplayingchess.→WhatdoesBoblikedoing?随堂小练：一.句型转换1.Susanisastudent.否定句：一般疑问句：特殊疑问句：

2.Icanplaytheguitar.

否定句：一般疑问句：特殊疑问句：Susanisnotastudent.IsSusanastudent?Whoisastudent?Icannotplaytheguitar.Canyouplaytheguitar?Whatcanyoudo?随堂小练：句型转换3.Lilyeatsapieceofbreadforbreakfast.

否定句：一般疑问句：特殊疑问句：Lilydoesn’teatapieceofbreadforbreakfast.DoesLilyeatapieceofbreadforbreakfast?WhatdoesLilyeatforbreakfast?注意事项①若主语为第一人称，转换为疑问句时，要将第一人称转换

为第二人称

如：Ilovewatchingmovies.→Doyoulovewatchingmovies?②若句中含有some，转换为否定句和疑问句时，要变成any

如：Tomhassomebooks.→DoesTomhaveanybooks?③若句中含有and，转换为否定句和疑问句时，要变成or

如：Tinahasanappleandabanana.

→DoesTinahaveanappleorabanana?

随堂小练：句型转换1.Ilovewatchingmovies.否定句：一般疑问句：特殊疑问句：

2.Shehassomenewbooks.

否定句：一般疑问句：特殊疑问句：Idon’tlovewatchingmovies.Doyoulovewatchingmovies?Whatdoyoulove?Shehasnotanynewbooks.Doesshehaveanynewbooks?Whatdoesshehave?随堂小练：句型转换3.Lilyeatsapieceofbreadanddrinkacupofmilkforbreakfast.

否定句：一般疑问句：特殊疑问句：Lilydoesn’teatapieceofbreadoracupofmilkforbreakfast.DoesLilyeatapieceofbreadoracupofmilkforbreakfast?WhatdoesLilyeatforbreakfast?综合练习:一、用括号内所给单词的正确形式填空。1.Everyone_____________(say)sheisagoodstudent.2.What_______youalways_______(do)o