英语中be动词用法和助动词---do
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2021年01月30日 13:32
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-
英语中
be
动词用法和助动词
---do
1.
由连系
am
，
is
，
are
构成的句子：
变一般 疑问句时把
am
，
is
，
are
提到句子的前面，
句尾用问号即可。变否定句时直接在
am
，
is
，
are
后 面加
not
即可。例如：
肯定句
:He is a student.
一般疑问句
: Is he a student?
否定句
: He is not a student.
反问句
: He is a student, isn't he?
He isn't a student, is he?
画线提问
:
对
he
提问
: Who is a student?
对
a student
提问
: What is he? or What does he do?
2.
由情态动词
can, may, should
等构成的句子
:
变一般疑问句时把
can,may ,
提到句
子的前面
,
句尾用问号即可
.
变否定句时直接在< br>can,may,
后面加
not
即可
.
例如
:
肯定句
: She can swim.
一般疑问句
: Can she swim?
否定句
: She can not swim.
反问句
: She can swim, can't she?
She can not swim, can she?
画线提问
:
对
she
提问
: Who can swim?
对
swim
提问
: What can she do?
3.
由行为动词构成的句子
:
需要加助词
do
或
does.
变一般疑问句时把
do/does
放在
句子前面
.
例如
:
肯定句
: They play football after school.
一般疑问句
: Do they play football after school?
否定句
: They don't (do not) play football after school.
反问句
: They play football after school, don't they?
They don't play football after school, do they?
画线提问
:
对
they
提问
: Who play football after school?
对
play football
提问
: What do they do after school?
对
after school
提问
: When do they play football?
1.
由连系
am
，
is
，
are
构成 的句子：
变一般疑问句时把
am
，
is
，
are
提 到句子的前面，
句尾用问号即可。变否定句时直接在
am
，
is
，< br>are
后面加
not
即可。例如：
肯定句
:He is a student.
一般疑问句
: Is he a student?
否定句
: He is not a student.
反问句
: He is a student, isn't he?
He isn't a student, is he?
画线提问
:
对
he
提问
: Who is a student?
对
a student
提问
: What is he? or What does he do?
2.
由情态动词
can, may, should
等构成的句子
:
变 一般疑问句时把
can,may,
提到句
子的前面
,
句尾用问号即可
.
变否定句时直接在
can,may,
后面加
not
即可< br>.
例如
:
肯定句
: She can swim.
一般疑问句
: Can she swim?
否定句
: She can not swim.
反问句
: She can swim, can't she?
She can not swim, can she?
画线提问
:
对
she
提问
: Who can swim?
对
swim
提问
: What can she do?
3.
由行为动词构成的句子
:
需要加助词
do
或
does.
变一般疑问句时把
do/does
放在
句子前面
.
例如
:
肯定句
: They play football after school.
一般疑问句
: Do they play football after school?
否定句
: They don't (do not) play football after school.
反问句
: They play football after school, don't they?
They don't play football after school, do they?
画线提问
:
对
they
提问
: Who play football after school?
对
play football
提问
: What do they do after school?
对
after school
提问
: When do they play football?