must 的反意疑问句的用法 must表示“必须,一定”,反意问句用must,这句话对吗

如题所述

第1个回答  2020-02-05
一):
1)陈述部分有must
的反义疑问句,疑问部分根据实际情况而定。例如:
He
must
be
a
doctor,
isn't
he?
他肯定是医生,是吗?
You
must
have
studied
English
for
three
years,
haven't
you?
/
didn't
you?
你一定读过三年英语,对吗?
He
must
have
finished
it
yesterday,
didn't
he?
他肯定是在昨天完成任务的,是吗?
(2)must在表“推测”时,根据其推测的情况来确定反意疑问句。

He
must
be
there
now,
isn't
he?

It
must
be
going
to
rain
tomorrow,
won't
it?
这里是表示“推测”:It
must
be
your
book,isn't
it?
二):
Must
  .当陈述部分有情态动词must,问句有4种情况:
  (1)mustn't表示“禁止,不可,不必”时,附加问句通常要用must.
  You
mustn't
stop
your
car
here,
must
you?
  你不能把车停在这地方,知道吗?
  (2)must表示“有必要”时,附加问句通常要用needn't.
  They
must
finish
the
work
today,
needn’t
they?
  他们今天要完成这项工作,是吗?
  (3)当must用来表示对现在的情况进行推测时,问句通常要根据must后面的动词采用相应的形式。
  He
must
be
good
at
English,
isn’the?
他英语一定学得很好,是吗?
  She
must
be
a
good
English
teacher,
isn’t
she?
她一定是位优秀的英语老师,是吗?
  (4)当must
have
done表示对过去的情况进行推测(一般句中有明确的过去时间状语),问句要根据陈述部分谓语的情况用“didn't+主语”或“wasn't/weren't+主语”;如果强调动作的完成(一般没有明确的过去时间状语),问句要用“haven't/hasn't+主语”。
  She
must
have
read
the
novel
last
week,
didn’t
she?
  她上星期一定读了这本小说,是吗?
  You
must
have
told
her
about
it,
haven’t
you?
  你一定把这事告诉她了,是吗?
速记方法  前肯后否,前否后肯,前be后be,前无be后加助,时态一致。
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