Your teacher will not punish you ___ you finish your homework on time.A.if B.unlessA或B选哪个?然后再翻译一下

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Your teacher will not punish you ___ you finish your homework on time.A.if B.unlessA或B选哪个?然后再翻译一下

Your teacher will not punish you ___ you finish your homework on time.A.if B.unlessA或B选哪个?然后再翻译一下
Your teacher will not punish you ___ you finish your homework on time.A.if B.unless
A或B选哪个?然后再翻译一下

Your teacher will not punish you ___ you finish your homework on time.A.if B.unlessA或B选哪个?然后再翻译一下
if是如果的意思
unless是如果不的意思
题目意思是:如果你按时完成作业,你的老师就不会惩罚你.
如果选unless,那么意思就是:如果你不按时完成作业,你的老师就不会惩罚你,不符合逻辑.
选A了

if.
如果你按时完成作业,你的老师就不会惩罚你。

unless和if...not的区别
unless在意义上相当于if…not…,因此在有些场合if…not…可为unless所代替。
但在有些场合又不能互换,我们要注意下面几种情况:
1.当if…not…引导非真实条件分句时,一般不可改用unless。 例如:
If she had not had an alarm clock,she would have m...

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unless和if...not的区别
unless在意义上相当于if…not…,因此在有些场合if…not…可为unless所代替。
但在有些场合又不能互换,我们要注意下面几种情况:
1.当if…not…引导非真实条件分句时,一般不可改用unless。 例如:
If she had not had an alarm clock,she would have missedthe train.(事实:她有闹钟。)
如果把上述例句中的if…not…换成unless,意义就相反了。
(误)Unless she had had an alarm clock, she would havemissed the train.(事实:她没有闹钟)
2.If…not…引导的条件分句可以重叠使用,unless则不可, 因为unless表示唯一条件。例如:
She won't lose weight if she doesn't keep a diet and ifshe does not take exercise every day.
3.unless引导的分句可用否定结构,而if…not …引导的分句不可再否定。例如:
Don't ask me to explain unless you really don't understand.
The directors have a meeting every Friday,unless there is nothing to discuss.
以上两例句中的unless不可换成if…not…。
4.在unless引导的肯定形式的条件分句中, 通常用肯定词(即some,already,still,too,as well等),在if…not…引导的分句中,通常用非肯定词(即any,yet,ever,either,at all等)。例如:
I will criticize you if you haven't spoken to her yet.
I will criticize you unless you have already spoken to her.
(误)…unless you have spoken to her yet.
不过在否定形式的非真实条件分句中,if…not …结构仍能与肯定词连用。例如:
If he hadn't already prepared his lesson, he wouldn't beallowed to go.(因为这种从句表面上是否定,实际上是肯定。)
5.在间接引语中,当if=whether,意为“是否”,unless 不可以代替if…not…。例如:
She promised to let me know if she wasn't coming.
6.当unless含有“除了”的意思,不可为if…not…所替代。例如:
He never stammers,unless when he is angry.( unless when=except when)
Nothing will come out of it, unless disaster.(unless=except)
7.当主句是疑问句时,不可用unless代替if…not…。 因为unless用在A情况发生,必导致B结果之类的复合句中。例如:
What shall we do it they don't reply to our letters?
8.当主句谓语是be+某些形容词或分词,如:glad,surprised,disappointed,satisfied,ashamed,delighted和pleased等, 不可用unless代替if…not…。例如:
I'll be really surprised if they don't come to the meeting.
I'll be quite glad if she doesn't join them.
之所以不能为unless代替,是强调否定条件的出现,表明在这种前题下的因果关系。以上条件状语从句都可变为原因状语从句。例如:
I'll be really surprised that they won't come to the meeting.
这里if被that代替了,而从句的否定结构不变。
综上所述,unless既等于if…not…,在某些场合又不相等, 因此要牢记它们之间的差别,准确地使用它们。

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A
if是如果的意思
unless是如果不的意思