Unit One 语法篇
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重点掌握一般现在时的用法
重点语法：
一、一般现在时的用法：A.现在经常性的动作或状态B.客观事实和真理
一般现在时表示习惯性、经常性、反复性的动作或存在的状态。“习惯性、经常性、反复性”是一般现在时的三大特性，它不表示特定时间内发生的事。
二、时间状语标志词:always,usually,often, sometimes, never,every day /week /month/year/… 三、一般现在时的构成：Be动词构成的一般现在时；实义动词构成的一般现在时 四、谈谈“主语为三单，其后动词s添”
在一般现在时中，当主语为第三人称单数时，谓语动词要用第三人称单数形式。可以简单叙述为“主语为三单，其后动词s添”。何谓第三人称单数？用一句话概括就是“非你、非我、非复数”， 如he, she, it, my father, my mother, my sister, our English teacher, Tom, Mike, Liu Jia, China, my book, etc.
五、动词第三人称单数变化规则
动词第三人称变化的规则与可数名词复数变化的规则相同。 规则一、一般在词尾加-s。 如：looks, puts. reads, sees, skis等。 规则二、以-o, -s, -x, -sh, -ch结尾的加-es。 如：goes, does, misses, passes, mixes, fixes, pushes, wishes, watches, teaches,等。 规则三、以辅音字母加y结尾的，变y为i，再加-es。注意一定是辅音字母加y才变，若是元音字母加y，则直接加-s。 如：fly → flies, try → tries, fry → fries, copy → copies, buy → buys,
enjoy → enjoys, play → plays, say → says, pay → pays 六、一般现在时的句子转换
（1）当句子中有be动词或情态动词时，则把be动词或情态动词(can,could等等)提到主语的前面变成一般疑问句;在be动词或情态动词后面加not变成否定句.例： ①陈述句：She is a student.
一般疑问句→ Is she a student? 否定句→ She is not a student. ②陈述句：I can swim.
一般疑问句→ Can you swim? 否定句→ I can not swim.
（2）当句子中即没有be动词，也没有情态动词时，则在主语前加助动词do (you,以及复数), does（单数she,he,it）变成一般疑问句；在主语后谓语动词前加助动词don’t（I,you,以及复数), doesn’t（单数she,he,it）变成否定句，助动词后的动词要变成动词原形。例： ①陈述句：We get up at 7:00 every morning. 一般疑问句→Do you get up at 7:00 every morning? 否定句→We don’t get up at 7:00 every morning. ②陈述句：She has a little brother.
一般疑问句→ Does she have a little brother? 否定句→ She doesn’t have a little brother.
1._______________you often travel for car?
A.Do B.Are C.Is D.Does 2.___________Mary go online everyday?
A.Do B.Are C.Is D.Does 3.--Do over 50% of fire start in bedroom? ---__________________.
A.Yes,they are B.No,they aren’t C.No,they don’t D.Yes,they start 4.My sister________her homework at home because she does it at school. A.isn’t do B.doesn’t do C.does D.do 5.How________your brother___________the Internet to make phone?
A.do; use B.does; use C.does; uses D.does; using 解析：
1.travel是动词，所以我们必须用助动词来构成一般疑问句，you是第二人称，所以用do。 2.Mary 是第三人称单数，借助助动词does来构成一般疑问句。
3.问句中是用助动词do来构成疑问句的，所以用什么问，就用什么答，故选C。 4.做作业是动词，所以借助助动词do或者does,根据because后面的内容可知选B。
5.use是动词，所以我们必须用助动词来构成一般疑问句,your brother是第三人称单数，所以用does,在借助助动词后，原来的动词要还原。故选B。 答案： 1. A 2.D 3.C 4. B 5.B
基础演练
一、写出下列动词第三人称单数的变化形式。
1.be________ 2.have_______ 3.come______ 4.go_________ 5.stay__________ 6.teach______ 7.write________ 8.take_______ 9.study______ 10.watch_______ 11.fly_______ 12.play________ 13.run_______ 14. do_______ 15.like_________ 16.carry_____ 17.guess_______ 18.finish______ 19.snow______ 20.wash_______ 二、用括号中所给词的适当形式填空。 1．The buses ______ (use) a lot of oil.
2．Each of us ______ (have) strong points and weak points.
3．My daughter ___ (watch) TV every day. Sometimes she __(see) a film on Sunday. 4．Li Wei ________ (have) a daughter. She stays in a nursery. 5．Our family _________ (be) a happy one.
6．Her mother ___________ (teach) English at a middle school. 7．Jack often ___________ (listen) to the radio. 8．He ________ (say) that Prof. Li is tired. 三、从括号中选择合适的词语填空。
1.We often play football _____________(after school/after-school).
2.I often to ____________(watch/look/see) the football match in the evening. 3.My father likes to_____________(see/look/watch/read)newspaper every morning. 4.She has some free time ,so she plays the piano___________(sometimes/always). 5.______________(How often/How many)do you go to clubs after school.
巩固提高
四、用所给词的正确形式填空。
1.My brother________(tidy) his room every morning.
2.They________(clean) the classroom after school every day.
3.Mike ___________(not like )the movie because he thinks it is too boring. 4.Mary sometimes__________(have) lunch at school. 5.We usually __________(go) to work by bus.
6.My father often __________(watch) football matches on TV. 五、句型转换。
1.Jim is always late for school.(对画线部分提问） ________ ________ ________ Jim late for school?
2.I often read books in our school library after school.(改为一般疑问句） ________ ________ ________ read books in your school library after school? 3.I watch a football match on TV every day.(对画线部分提问） _________ ________ ________ you watch a football match on TV? 4.I play sports with my friends after school.(对画线部分提问）
七年级英语下册Unit1DailyLife语法篇(含答案)
