第1个回答 2020-04-04
1.一般现在时的被动语态构成:is
/
am
/
are
+
及物动词的过去分词
Our
classroom
is
cleaned
everyday.
I
am
asked
to
study
hard.
Knives
are
used
for
cutting
things.
2.一般过去时的被动语态构成:was
/
were
+
及物动词的过去分词
A
new
shop
was
built
last
year.
Dinosaur
eggs
were
laid
long
long
ago.
3.现在完成时的被动语态构成:has
/
have
+
been
+及物动词的过去分词
This
book
has
been
translated
into
many
languages.
Many
man-made
satellites
have
been
sent
up
into
space
by
many
countries.
4.一般将来时的被动语态构成:will/shall+
be
+
及物动词的过去分词
A
new
hospital
will
be
built
in
our
city.
Many
more
trees
will
be
planted
next
year.
5.含有情态动词的被动语态构成:情态动词+
be
+
及物动词的过去分词
Young
trees
must
be
watered
often.
Your
mistakes
should
be
corrected
right
now.
The
door
may
be
locked
inside.
Your
homework
can
be
handed
in
tomorrow.
6.现在进行时的被动语态构成:am
/
is
/
are
+
being
+及物动词的过去分词
Uncle
Wang
is
mending
my
bike
now.→
My
bike
is
being
repaired
by
Tom
now.
They
are
planting
trees
over
there.
→
Trees
are
being
planted
over
there
by
them.
7.不定式的被动语态:to
+
be
+
及物动词的过去分词
There
are
two
books
to
be
read.
→
There
are
twenty
more
trees
to
be
planted.
8.过去将来时的被动语态:would
/should+
be
+
及物动词的过去分词
He
said
he
would
finish
the
work
soon.
He
said
the
work
would
be
finished
soon
by
him.