1.当我去拜访史密斯一家时，他们正在吃饭The
Smith
were
having
dinner
when
I
went
to
visit
them.
2.你昨天打电话给我时，我正在看电视I
was
watching
TV
when
you
called
me
yesterday.
3.我们第一次见面的时候，她正在等待她的男朋友
The
first
time
we
met,
she
was
waiting
for
her
boyfriend.
4.汤姆正在街上走着，忽然看到一起事故Tom
happened
to
see
an
accident
when
he
was
walking
on
the
street.
5.因为下雨，我就回来了It
is
raining,
so
I
come
back.
6.她笑容满面地走进屋
She
entered
the
room
with
a
smile
on
her
face.
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