Question

情态动词在一般将来时的被动语态中的位置

Answer 1

情态动词不用于将来时，你的理解错误。情态动词只用于现在时和过去式。

Answer 2

1.we
should
water
the
flowers
twice
a
week
改：the
flowers
should
be
watered
by
us
twice
a
week.（should是情态动词，后面要加动词原形，were\are\is\was\am等的原型都是be.
2.you
may
keep
thebook
for
a
week
__the
book
may
be
kept
for
a
week.______________________________
3.they
must
finish
thier
homewrok
on
time。
___their
homework
must
be
finished
on
time._____________________________
4.you
shuould
tell
them
a
ture
story
＿＿they
should
be
told
a
true
sotry.
a
true
story
should
be
told
to
them