英语第三人称单数的例句

我的兄弟当然是第三人称单数。
要记住人名，家庭成员或者是一个名词的单数都是第三人称单数。
将his
brother
wants
to
get
his
book
back.(改为否定句）
需要注意do（助动词）后要加动词原形。
所以是his
brother
doesn't
want
to
get
his
book
back.

He
is
a
student.
/
He
is
not
a
student.She
is
a
doctor.
/
She
is
not
a
doctor.It
is
a
lovely
dog.
/
It
is
not
a
lovely
dog.He
has
a
book.
/
He
doesn't
have
a
book.She
has
a
watch.
/
She
doesn't
have
a
watch.It
has
a
water
bottle.
/
It
doesn't
have
a
water
bottle.He
likes
his
father.
/
He
doesn't
like
his
father.She
likes
to
drink
milk.
/
She
doesn't
like
to
drink
milk.It
likes
to
cry
loudly.
/
It
doesn't
like
to
cry
loudly.总之，若第三人称单数后跟be动词，那么所有的be动词都是is。如果是过去式，那is就变形为was。若第三人称单数后跟动词，所有的动词末尾都加"S"或"es"。若是要变为否定句，就把动词换为原型，在主格（he/she/it）和动词之间加上"does
not"(简写为doesn't)。