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Lesson 45 The boss’s letter
授课内容：
一句型
I can see the teapot, but I can’t see the tea.
Can you type this letter
Come here来这
Next door 隔壁
What’s the matter 怎么了？
二．重点语言点
1. 情态动词can的用法
1.情态动词后跟动词原形
can+动词原形
2. 情态动词没有人称和数的变化
I can swim.
He can swim.
3. 情态动词can的用法
. 表示能力 “会， 能”
I can sing.
. 表示允许 “可以”
Can I come in
.表示可能性 “可能”
This can't be my book.
4. Can的各种句型
①.肯定句
主语+can+动词原形+其他
I can swim.
②. 否定句
主语+can’t+动词原形+其他
I can't swim.
③. 一般疑问句
Can+主语+动词原形+其他
Can you swim
④. 特殊疑问句
特殊疑问词+can+主语+动词原形+其他
What can you do
可数名词单数变复数规则
1. 一般的名词词尾直接加-s 。如：
　　 book → books room → rooms house → houses
2. 以s,　sh, ch, x 结尾的名词，在词尾加-es 。如：
　　 bus → buses dish → dishes watch → watches box → boxes
3. 以"辅音字母+y"结尾的名词，要先变y为i再加-es。如：
　　 city → cities body → bodies
注：以“元音字母+y”结尾的名词，直接在词尾加-s。如：
boy→boys toy→toys monkey→monkeys
4. 以f 或fe 结尾的名词，要将f或fe改为v再加-es。如：
　　 wife→wives knife →knives leaf → leaves
5. 以元音字母o结尾的名词一般加-s构成复数，如：
photo--photos piano--pianos
某些特殊的词加 -es
黑人英雄爱吃芒果，土豆，西红柿
6. 鱼、鹿、绵羊、中、日人单复数同形。
sheep→ sheep deer→ deer fish→fish
Chinese→ Chinese Japanese→ Japanese
7. 集体名词
集体名词,以单数形式出现,但实为复数。例如：
people→ people police→ police cattle→ cattle
8. 不规则变化
child → children man→ men woman→ women
policeman→ policemen policewoman→policewomen
foot→ feet tooth→ teeth goose→geese mouse→mice
名词所有格变化规则
一般情况下直接在名词后加’s. father’s 爸爸的 teacher’s老师的
一般以s结尾的名词复数只加 ’ 不加s. 单数可以只加 ’ ，也可以加 ’s.
大家共同拥有某人或某物时，只在最后一者后面加 ’ 或 ’s.
课堂练习
写出一下名词的复数形式
horse________ sheep________ ox________ policeman________
mouse________ man________ fish________ tooth________
watch________ bus________ box________ computer________
woman________ child________ baby________ family________
knife________ orange________ potato________ photo________
选择
（ ）1. I would like ______ orange.
A.a B. the C.an D./
（ ）2. -I have four_____ .
A.crayon B.crayones C.crayons D.pencil
（ ）3. -How many ______ are there in the fishbowl
-There is no _____ in it.
A.fishes;fish B. fish, fishes C. fish, fish D. fishes, fishes
（ ）4.There ______ some milk and biscuits on the table.
is B.are C.has D.have
（ ）5.I’m 1.5 _______ tall.
meter B. metres C.metre D.metrees
三、名词所有格专练
1. ----How’s Joy’s skirt
----Her skirt is more beautiful than ________.
A.her sister’s and Kate B.her sister and Kate
C.her sister and Kate’s D.her sister’s and Kate’s
2．This is _______ room. The twin sisters like it very much.
A.Lucy’s and Lily’s B.Lucy’s and Lily C.Lucy and Lily’s
3．Who is the man in the blue car He is __________ father.
A. Kate’s and Mary’s B. Kate and Mary’s
C. Kate and Mary D. of Kate and Mary
4．Is this your room No, it’s _________room.
A. the children B. the children’s C. of the children D. the childrens’
5．__________ mothers made them have piano lessons.
A. Peter and Anna B. Peter’s and Anna’s
C. Peter’s and Anna D. Peter and Anna’s
6．The room on the right is ________.
A. her B. she C. Lucy’s D. Lucy
7．Whose bike is it It’s ____________.
A. John B. John’s C. Johns’ D. Johns
8．The market isn’t far from here. It’s only ___________ bicycle ride.
A. half an hours’ B. half an hour’s
C. half an hour D. an hour and a half
9．Where’s your father At _________.
A. Mr Green’s B. Mr. Green C. the Mr. Green’s
10．The twin brothers always put small presents in ___________stockings on Christmas Day.
A. each other’s B. each other C. each others D. each others’

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