有情态动词时主动语态怎样变为被动语态,例句

2024年11月16日 07:24
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网友(1):

含有情态动词的主动句变成被动句时,由“情态动词+be+过去分词”构成,原来带to的情态动词变成被动语态后,to
仍要保留。例如:
We
can
repair
this
watch
in
two
days.
→This
watch
can
be
repaired
in
two
days.
They
should
do
it
at
once.
→It
should
be
done
at
once.