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1. 大部分单词可以直接在动词后:+s
例：like -- likes
play -- plays
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
He watches TV every day.
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
He goes to school at 7o'clock in the morning.
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
He studies very hard.
发音规则：
词尾加的“es”，发 【iz】，carries
5. 不规则变化：
例：
have -- has
I have some milk.
He has some milk.
be 动词的单三形式是：is
小练笔：
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.
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
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