we
should
have
bought
a
new
lock
for
the
front
door.
我们本该买把新锁安在前门上.
you
shouldn't
drink
and
drive.你不应该喝酒後开车.
i
must
go
to
the
bank
to
get
some
money.
我得到银行去取些钱.
you
mustn't
leave
the
gate
open.
你不要敞著大门.
1
He
said
he
would
go
to
Beijing
next
week.
他说他下星期将会去北京。
2
We
would
not
live
without
water.
没有水我们不能生存。