外研（新标准）版七年级上册 动词第三人称单数的变化规则及练习 各版本通用（含答案）

动词第三人称单数的变化规则及练习各版本通用
一．什么是第三人称单数（third person singular）？
第三人称单数（third person singular）是指表示单数的人称，且不包括说话者和听话者。
例如：He is a student.
She sings beautifully.
It has two legs.
二．什么是动词的第三人称单数形式？
动词的第三人称单数形式是指当主语是第三人称单数（he、she、it 或单个名词）时，动词需要进行相应的变化。
三．形式变化：
1.大部分单词可以直接在动词后:+s
例：like -- likes play -- plays work--works read--reads write--writes She likes cola.
发音规则：所加的“s”在清辅音后，发【s】，works在浊辅音及元音后，发【z】， plays在 d 后与 s 一起发 【dz】，reads在 t 后与 s 一起发 【ts】，writes
2.以 s, x, sh, ch, 结尾的动词:+es
例： watch -- watches brush-- brushes wash--washes
发音规则：词尾加的“es”，发 【iz】
3.以辅音 +o 结尾的动词:+es
例：go -- goes do -- does
发音规则：词尾加的“es”，发 【z】，does
4.以辅音 +y 结尾的动词: 变 y 为 i+es
例： fly -- flies study -- studies carry--carries
发音规则：词尾加的“es”，发 【iz】，carries
5.不规则变化：
例： have -- has
6.be 动词的单三形式是：is
7.需要记忆
He goes home.
She does homework.
It has twenty pages.
四．重要提示：
肯定句：当主语是第三人称单数时，动词的第三人称单数形式要与其保持一致。
在否定句和疑问句中，也需要使用动词的第三人称单数形式，助动词 does 后使用动词原形。
- 注意特殊不规则动词，如 have（has）、do（does）、go（goes）等。
否定形式：
在否定句中，动词的第三人称单数形式在助动词 does 后还原为动词原形。
例如：
- He does not play basketball.（他不打篮球。）
- She does not like coffee.（她不喜欢咖啡。）
- The cat does not chase mice.（这只猫不追逐老鼠。）
- John does not speak Spanish.（约翰不会说西班牙语。）
疑问形式：
在含有助动词 does 的疑问句中，动词的第三人称单数形式还原为动词原形。
例如：
- Does he play basketball （他打篮球吗？）
- Does she like coffee （她喜欢咖啡吗？）
- Does the cat chase mice （这只猫会追逐老鼠吗？）
- Does John speak Spanish （约翰会说西班牙语吗？）
五．需要注意的是，如果动词本身是 "be"，则在否定句和疑问句中直接使用 "is not" 或 "are not"，而不需要额外的助动词 "do" 或 "does"。
例如：
- He is not happy.（他不开心。）
- Is she a student （她是学生吗？）
练习
1. 写出下列动词第三人称单数。
drink ________ go _______
stay ________ make _______
look _________ have_______
pass_______ carry ________
come________ watch______
plan_______ fly ________
study_______ brush________
do_________ teach_______
2. 用所给单词的适当形式填空。
(1) He______ (go) to school by bus every morning.
(2) Jim_______ (have) many toys.
(3) Lucy ______ (study) very hard.
She______ (be) never late for school.
(4) Ken_______ (like) his father very much.
3.单选。
1 .My mother often ________ me about my studies. ( )
A．asks B．asking C．ask
2 .My sister _______ to school every day. ( )
A．goes B．go C．going
3 .Bobby ________ watermelons and I ________ grapes. ( )
A．have; has B．has; have C．have; have
4 .Maggie usually ________ TV in the evening. ( )
A．watch B．watches C．watching
5 .The man ________ in London and he ________ English. ( )
A．live; study B．is live; studies C．lives; studies
6 .I often ________ TV on Friday evening. But my father usually ________ TV on Sunday. ( )
A．watch; watch B．watch; watchs C．watch; watches
7 .写出下列动词的第三人称单数形式。
【小题1】cry ______
【小题2】dance ______
【小题3】read ______
【小题4】put ______
【小题5】talk ______
8 .His father usually ______ (A. goes B. go) to work at 7:00 in the morning.
9 .My school s______ at 8:00 a.m. and f______ at 4:00 p.m.
10 .—Let's go to see a cartoon. —That ______ (听起来) boring.
11 .He ________ (刷) his teeth in the morning.
12 .Mike always ______ (have) meals on time, but his sister ______ (do).
13 .He _____ (look) so happy today.
14 .He often _____ (go) to school at 6:45.
15 .Mocky, this comic book __________ (look) more interesting.
16 .Wang Bing ______ (have) a new coat.
17 .The apple ________ (taste) sweet and crunchy.
18 .Who _______ (want) to go shopping today
19 .She likes _____ (sing). She often _____ (sing) English songs for us.
20 .I can _____ (run) _____ (fast), but she _____ (run) _____ (slow).
参考答案：
1.drinks goes stays makes looks has
passes carries comes watches plans
flies studies brushes does teaches
2. (1) goes (2) has (3) studies is (4) likes
1-6 AABBCC
【小题1】cries
【小题2】dances
【小题3】reads
【小题4】puts
【小题5】talks
A 9.starts finishes 10.sounds 11.brushes 12.has doesn’t
13.looks 14.goes 15.looks 16.has 17.tastes
18.wants 19.singing sings 20.run fast runs slowly