动词第三人称单数形式的使用条件及变化规律 在一般现在时中，当主语是第三人称单数时，谓语动词要用第三人称单数形式，即常在动词原形后加-s或-es。但有些同学们对于哪些主语是第三人称单数还不十分清楚，现归纳总结如下： 一、 人称代词he, she, it是第三人称单数。如： He likes watching TV. 他喜欢看电视。 She has lunch at twelve. 她十二点吃午餐。 It looks like a cat. 它看起来像只猫。 二、单个人名、地名或称呼作主语；是第三人称单数。如： ①Han Mei looks like her mother. 韩梅看起来像她的母亲。 ②Beijing is in China. 北京在中国。 ③Uncle Wang often makes cakes. 王叔叔经常做蛋糕。 三、单数可数名词或"this / that / the+单数可数名词"作主语时，是第三人称单数。如： ①A horse is a useful animal. 马是有用的动物。 ②This book is yours. 这本书是你的。 ③That car is red. 那辆小汽车是红色的。 ④The cat is Lucy's. 这只猫是露茜的。 四、不定代词someone, somebody, nobody, everything, something等及指示代词this,that作主语时，是第三人称单数。如： ①Everyone is here. 大家到齐了。 ②There is something wrong with the watch. 这块手表有毛病。 ③This is a pen. 这是一支钢笔。 ④That is an eraser. 那是一块橡皮擦。 五、不可数名词作主语时为第三人称单数。如： ①The milk is in the glass. 牛奶在玻璃杯里。②The bread is very small. 那面包很小。 六、当数字或字母作主语时，看作第三人称单数。如： ①"6" is a lucky number. "6"是个吉利数字。②"I" is a letter. "I"是个字母。 标志词usually often always sometimes never every等 动词的变化规则 一般现在时的肯定句中，主语为第三人称单数的动词变化主要体现在词尾的变化上，其规律大体有三点： 1. 一般情况下，直接在动词词尾+s ，例如：get→gets; take→takes 2. 以s, sh, ch, x, o 结尾的动词，在词尾+ es，例如： teach→ teaches; fix→fixes; go→goes 3. 以辅音字母+ y 结尾的动词，变y 为i，再+ es，如：study→ studies; try→tries 除上述规律外，还应注意下面三点： 1. 动词 have ，遇到主语是第三人称单数时，要用 has； 动词 be 的第三人称单数形式是is。 2. 含有动词第三人称单数形式的句子变否定句时，要用 doesn't + 动词原形，如： He goes to school at six in the morning. (变否定句)→ He doesn't go to school at six in the morning. 3. 对含有动词第三人称单数形式的句子提问时，要用助动词 does，如： She goes home at five every day. (对划线部分提问)→ When / What time does she go home every day? 一、 写出下列动词的第三人称单数 drink ________ go _______ stay ________ make ________ look _________ have_______ push_______ carry _______ come________ watch______ read_______ fly ________ study_______ brush________ do_________ teach_______ drive _______ work _______ help______ take ______ 二.用括号内动词的适当形式填空。 1.He often ________(have) dinner at home. 2.We ____________(not watch) TV on Monday. 3.Mike ____________(not go) to the zoo on Sunday. 4.______ (do) they ________(like) reading stories? 5.What _______(do) they often _______(do) on Saturdays? 6._______(do) your parents _______(read) newspapers every day? 7.The girl _______(teach) us English on Sundays. 8.She and I ________(take) a walk together every evening. 9.There ________(be) some water in the bottle. 10.Mike _______(like) cooking. 11.They _______(have) the same hobby. 12.My aunt _______(look) after her baby carefully. 13.He can_______(do) his homework well. 14.My father is a factory worker. He ______(make) toy cars. 15.She _______(go) to school from Monday to Friday. 16.Liu Tao _______(do) not like PE. 17.The boy often _______(watch) TV in the evening. 18.Su Hai and Su Yang _______(have) eight lessons this term. 19.I like ____________ (swim). 20.He _________(read) English every day. 21.We _________(go)to school at seven in the morning. 22.Mike________(go)to school at seven in the morning. 23.My mother________(like) ______(go) shopping. 24.I can ________(draw) many beautiful pictures. 25.She_________(make) a model plane. 26.Do you ________(like)_________(run)? 27.Does he_________(like)_________(jump) ? 28.Does Nancy_________(have) an English lesson on Saturday ? 29.The teachers________(like)___________(dance). 30.The teacher________(like)____________(dance). 31.The students___________(speak) English in class. 32.The student_________(speak) Chinese after class. 本文来源：https://www.wddqw.com/doc/d88dbaa348d7c1c709a145ab.html