小学的英语句型转换和时态讲解与练习
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否定句：
be动词（am、is、are）+not、
情态动词can+ not、
助动词（do、does） + not
如何将一个肯定的陈述句改为否定句：
1、看句中有无be动词，如有，直接在be动词后+ not。
2、看句中有无情态动词，如有，直接在情态动词后+ not。
3、如上述二者都没有，就应用助动词+ not。分四个步骤：
（1）肯定陈述句中本来是没有助动词的，要加上去，位置在主语（某人或某物）后，动词前。
（2）确定助动词用do、does，根据句中动词，动词是原形的助动词就用do，动词是第三人称单数的助动词就用does，
（3）在助动词后加not。
（4）原句中动词假如发生变化就要恢复成原形。
强调一点，有some的要考虑是否要用any。
1.I am
Tom. _____________________________
_
2.He is
nine. ____________________________
__
3.They are
pupils.______________________________
4.I can fly a kite.
______________________________
5.He can make a
toy. ______________________________ 6.You must go home
now.______________________________
7.I like
Jinan.
8.He likes
swimming.
9.He has many
books. 10.He has some
books.
11.There is a pen on the
desk.
12.There are some water in the
glass. ______________________________ 13.You have got some books.
___________________________________
14.You have some
books.
15.He has got some
apples.
16.He has some apples.
_________________________________________ 17.I like to watch
TV.
______ .
18.Xiao Fang and I go to the library
everSaturday.
.
19.Tim swims very
well.
___________ .
20.Mr. Smith has many books about the
cars.
.
21.I want to play with my
friends.
.
22.We feel cold
today.
_____________ .
23.Bob reads English
everyday.
.
24.We do our homework at
school.
.
25.Mr. White has two
houses.
.
一般疑问句
如何将一个肯定的陈述句改为一般疑问句：
1、看句中有无be动词，如有，把be动词提到句首即可。
2、看句中有无情态动词，如有，把情态动词提到句首即可。
3、如上述二者都没有，就应把助动提到句首。分四个步骤：
（1）肯定陈述句中本来是没有助动词的，要加上去，位置在主语（某人或某物）后，动词前。
（2）确定助动词用do还是does，根据句中动词，动词是原形的助动词就用do，动词是第三人称单数的助动词就用does
（3）把助动词后提到句首。
（4）原句中动词假如发生变化就要恢复成原形。
强调一点，有some的要考虑是否要用any。
26.I am
Tom. _____________________________
_
27.He is
nine. ____________________________
__
28.They are
pupils.______________________________
29.I can fly a kite.
______________________________
30.He can make a
toy. ______________________________ 31.You must go home
now.______________________________
32.I like
Jinan.
33.He likes
swimming.
34.He has many
books. 35.He has some
books.
36.There is a pen on the
desk.
37.There are some water in the
glass. ______________________________ 38.You have got some books.
___________________________________
39.You have some
books.
40.He has got some
apples.
41.He has some apples.
_________________________________________ 42.I like to watch
TV.
______ .
43.Xiao Fang and I go to the library
everSaturday.
.
44.Tim swims very
well.
___________ .
45.Mr. Smith has many books about the
cars.
.
46.I want to play with my
friends.
.
47.We feel cold
today.
_____________ .
48.Bob reads English
everyday.
.