Question

am is are was were的全部用法

Answer 1

were和was的区别
is
are
were是are的过去式
表示复数.
was是is
的过去式
表示单数.
eg:
there
was
a
slide
on
the
playground.
there
were
many
trees
on
the
playground.
children
were
happy
yesterday.
amy
was
hungry
yesterday.
did是助动词do和does的过去式，而was/were是be动词am、is/are的过去式。
一个句子中，如果没有be动词，发生动作要用助动词do或does.
例如：i
am
a
student.
问句是：are
you
a
student?
有be动词所以直接用are提问。
i
worked
in
an
international
company
2
years
ago.
句中没有be动词，所以要用助动词代替，问句是：
did
you
work
in
an
international
company
2
years
ago?