be am is are 的用法详细见补充 be和is，am ，are的分别用法（高分追加）
is am are \u7684\u7528\u6cd5\u3002is\u3001am\u3001are\u3001\u7684\u7528\u6cd5\u5982\u4e0b\uff1a
1\u3001\u7b2c\u4e00\u4eba\u79f0\u5355\u6570\u5f62\u5f0f\uff0c\u7528am
2\u3001\u7b2c\u4e09\u4eba\u79f0\u5355\u6570\u5f62\u5f0f\uff0c\u7528is
3\u3001\u7b2c\u4e00\u4eba\u79f0\u590d\u6570\u3001\u7b2c\u4e8c\u4eba\u79f0\u590d\u6570\u3001\u7b2c\u4e09\u4eba\u79f0\u7684\u590d\u6570\u5f62\u5f0f\uff0c\u5219\u7528are
4\u3001\u7b2c\u4e8c\u4eba\u79f0\u5355\u6570\u4e5f\u7528are
5\u3001will\u540e\u9762\u52a0\u52a8\u8bcd\u539f\u578b\uff0cam /is /are\u7684\u539f\u578b\u662fbe
6\u3001\u88ab\u52a8\u8bed\u6001\u4e00\u822c\u73b0\u5728\u65f6\uff1aam/is/are+done
7\u3001\u73b0\u5728\u8fdb\u884c\u65f6\uff1aam/is/are+being+done
am,is
are
\u90fd\u5c5e\u4e8ebe\u52a8\u8bcd\uff0cbe\u662f\u4ed6\u4eec\u7684\u539f\u578b
be\u52a8\u8bcd\u7684\u4e00\u822c\u73b0\u5728\u65f6\u6709\u4e09\u79cd\u5f62\u5f0f\uff0c\u5373\uff1aam,
is,
are\u3002
1.
\u5982\u679c\u4e3b\u8bed\u662f\u7b2c\u4e00\u4eba\u79f0I\uff08\u6211\uff09\u65f6\uff0cbe\u52a8\u8bcd\u7528am\u3002
\u5982\uff1aI
am
a
student.
\u6211\u662f\u4e00\u540d\u5b66\u751f\u3002
I
am
\u8fd8\u53ef\u7f29\u5199\u6210I'm\u3002\u5982\uff1a
I'm
David.
\u6211\u662f\u5927\u536b\u3002
2.
\u5982\u679c\u4e3b\u8bed\u662fyou
\uff08\u4f60\uff0c\u4f60\u4eec\uff09,
they
\uff08\u4ed6\u4eec\uff0c\u5b83\u4eec\uff0c\u5979\u4eec\uff09\u6216\u540d\u8bcd\u590d\u6570
\uff08\u4e24\u4e2a\u4ee5\u4e0a\u7684\u4eba\u6216\u7269\uff09\u65f6\uff0cbe\u52a8\u8bcd\u5fc5\u987b\u7528are\u3002
\u5982\uff1aAre
you
twelve?
\u4f60\u662f\u5341\u4e8c\u5c81\u5417\uff1f
Tom
and
Lily
are
good
friends.
\u6c64\u59c6\u548c\u8389\u8389\u662f\u597d\u670b\u53cb\u3002
They
are
at
school.
\u4ed6\u4eec\u5728\u5b66\u6821\u3002
are\u4e0e\u4e3b\u8bed\u8fd8\u53ef\u7f29\u5199\u3002\u5982\uff1a
We
are=
We're\uff0c
They
are
=They're,
You
are
=
You're\u3002\u800care\u4e0e
not\u53ef\u7f29\u5199\u6210aren't\u3002
\u5982\uff1aThey
aren't
students.
\u4ed6\u4eec\u4e0d\u662f\u5b66\u751f\u3002\u4f46\u662fam\u4e0enot\u4e0d\u80fd\u7f29\u5199\u3002
3.
\u5982\u679c\u4e3b\u8bed\u662f\u5355\u6570\u540d\u8bcd\u3001\u4e0d\u53ef\u6570\u540d\u8bcd\u6216\u5355\u6570\u7b2c\u4e09\u4eba\u79f0\u4ee3\u8bcd\uff08he,
she,
it\uff09\u65f6\uff0cbe\u52a8\u8bcd\u7528is\u3002
\u5982:My
mother
is
a
teacher.
\u6211\u7684\u5988\u5988\u662f\u4e00\u540d\u8001\u5e08\u3002
He
is
a
student.
\u4ed6\u662f\u4e00\u540d\u5b66\u751f\u3002
is\u4e5f\u53ef\u4e0e\u4e3b\u8bed\u7f29\u5199,\u5982:
He
is
=
He's,
My
mother
is
=
My
mother's\u7b49\u3002\u4f46\u662fThis
is\u4e0d\u53ef\u7f29\u5199\u3002\u800cis\u4e0enot\u53ef\u7f29\u5199\u6210
isn't\u3002
\u5982:This
isn't
a
book.
\u8fd9\u4e0d\u662f\u4e00\u672c\u4e66\u3002
\u6839\u636e\u4ee5\u4e0a\u53d9\u8ff0\u6211\u4eec\u53ef\u4ee5\u628a\u52a8\u8bcd\u7684\u7528\u6cd5\u4ee5\u53e3\u8bc0\u7684\u5f62\u5f0f\u8868\u8ff0\u51fa\u6765\uff1a
\u6211\uff08I\uff09\u662fam,
\u4f60\uff08you\uff09\u662fare,
\u5269\u4e0bis\u7559\u7ed9\u5979\uff08she\uff09,
\u4ed6\uff08he\uff09,
\u5b83\uff08it\uff09,
\u4e24\u4e2a\u4ee5\u4e0a\u90fd\u7528are\u3002
而do does可做实意动词，也可以做助动词，当主语为第三人称单数时使用does,当主语为第一人称和第二人称或可数名词的复数形式时使用do
扩展阅读：am is are的用法口诀 ... is are am三者的区别 ... be am is are 的过去式 ... is am are be的用法 ... be am is are的区别 ... you are welcome ... be和is am are的关系 ... are you ok ... baba is you ...
