514917837
你好！
希望我的资料可以帮助你！
现在完成时
现在完成时用来表示之前已发生或完成的动作或状
态，其结果的确和现在有联系。动作或状态发生在过去
但它的影响现在还存在；也可表示持续到现在的动作或
状态。其构成：
have
(has)
+过去分词。
i
have
answered
the
quesion
the
quesipn
has
been
solved
computer
has
been
invited
for
many
years
have
you
been
to
the
usa?
he
has
gone
to
home
I
have
answered
the
quesion
The
quesipn
has
been
solved
Computer
has
been
invited
for
many
years
Have
you
been
to
the
USA?
He
has
gone
to
home
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