Question

这句是属于什么语法？

Answer 1

一．

时态：
1.
一般现在时
表示一般性，经常性的动作或一般性事实。
u

含有be
动词的句子
He
is
a
teacher.
Tim
and
Jack
are
students.
★变疑问句将be
动词移到句首
Is
he
a
teacher?
Are
Tim
and
Jack
students?
★变否定句在be
动词后面加not
He
is
not
a
teacher.
Tim
and
Jack
are
not
students.
★肯定回答及否定回答
Yes,
he
is.
No,
he
is
not.
Yes,
they
are.
No,
they
are
not.
u

不含有动词的句子，即含有一般动词的句子
第三人称单数及单数名词
He
likes
books.
The
dog
likes
bones.
★变疑问句在句首加does,
动词变为原型
Does
he
like
books?
Does
the
dog
like
bones?
★变否定句在主语及动词之间加doesn’t,
动词变为原型
He
doesn’t
like
books.
The
dog
doesn’t
like
bones.
★肯定回答及否定回答：
Yes,
he
does.
No,
he
doesn’t.
Yes,
it
does.
No,
it
doesn’t.
注意：第三人称单数形式一般在动词后面加S
，不要和名词复数混淆，变否定句或疑问句时名词复数没有任何变化。
其他人称及复数名词
I
want
to
have
a
bath.
The
students
like
smart
teachers.
★变疑问句在句首加do

Answer 2

Be
worth用法:
1.be
worth
doing
值得做
在这里doing主动表示被动含义
例如The
book
is
worth
reading.
2.be
worth
to
be
done
这是worth后面加不定式
要变成不定式的被动语态
3.be
worth
of
being
done
以上三种意思一样
后两种是被动语态