①He must have left Beijing,(hasn't he?)②A:Those tomatoes are huge!You must have watered them a lot! B:Yes,I (did).They ought to be ripe enough to pick by next Friday.为什么①用现在完成时,②用一般过去时,②能不能用“Yes,I have.”?
If we're only
talking about the parts from the Ming Dynasty, it's about 8,850 kilometers
long.这是一个答句,问句是问长城多长?这个if引导的从句部分,为什么用are talking about
现在进行时呢?这是人教版八下七单元课文的一句话,谢谢老师们的解答...
When doctors
carried out an electroencephalography (EEG), they had discovered the patient
had developed epilepsy. However, during the EEG recordings he had experienced a
heart attack and died.这个句子按照逻辑,应该是医生执行了EEG后,才发现病人的问题,但为什么这里主...
Tom has gone out. Tom _______.
A. was out
B. has been out
C. is off
D. will be out
说明:对不起,由于匆忙,原题中的 C选项打成了 is out,其实是is off, 很抱歉!另外,我说请专家再补充的意思没说清楚,我想问的是选C 即 is off 可不可...
同一个主语是,但前后句时态不一致是,后半句能省略is吗?The country has (been/gone) through a drastic reduction in its birth rate _______ facing labor f shortage. 请问下老师:has been through 和 has gone through是不是都可以用?
后半句直接...
在一本资料书上看到,not...until…句式用于强调结构时,其基本形式是It is (was) not until…that…,但我见过It was not until…that…这样的句子,没有见过It is not until…that…这样的句子。请问not...until…的强调句式可以用于一般现在时...