谁给我简单讲下IF条件句I don’t know if Jack .If he ,call me,please.A.will come; will comes B.comes; comeC.comes; will come D.will come; comes A moment,please．I'm checking if Mr.Smith _________ free tomorrow．A．is B．being C．to be D

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谁给我简单讲下IF条件句I don’t know if Jack .If he ,call me,please.A.will come; will comes B.comes; comeC.comes; will come D.will come; comes A moment,please．I'm checking if Mr.Smith _________ free tomorrow．A．is B．being C．to be D
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谁给我简单讲下IF条件句I don’t know if Jack .If he ,call me,please.A.will come; will comes B.comes; comeC.comes; will come D.will come; comes A moment,please．I'm checking if Mr.Smith _________ free tomorrow．A．is B．being C．to be D
谁给我简单讲下IF条件句
I don’t know if Jack .If he ,call me,please.
A.will come; will comes B.comes; come
C.comes; will come D.will come; comes
A moment,please．I'm checking if Mr.Smith _________ free tomorrow．
A．is B．being C．to be D．will be
Auatar（阿凡达）is such _________ wonderful science fiction movie that I want to see it _________ second time．
A．a,a B．a,the C．／,the D．／,a
第三个是和IF没关系，帮解释下每题原因 答案是DDA,我想知道的是IF IF的意思我懂，

谁给我简单讲下IF条件句I don’t know if Jack .If he ,call me,please.A.will come; will comes B.comes; comeC.comes; will come D.will come; comes A moment,please．I'm checking if Mr.Smith _________ free tomorrow．A．is B．being C．to be D
1. D
第一个if是宾语从句的引导词,意思是“是否”.从句时态根据句意应该是一般将来时,所以是will come；
第二个if是条件状语从句的引导词,意思是“如果”.根据时态的“主将从现”原则,所以是comes.
2. D
同理,此处的if是表语从句的引导词,意思是“是否”.从句时态应该根据实际情况来确定.从句中含有tomorrow,所以其为一般将来时,所以用will be.
3. A
movie是可数名词,所以第一空必须有冠词a,排除CD；
a second time意思是“再次/又一次”,可以单独做状语.
而the second time意思是“第二次”,不能单独做状语,需加上介词for才可以.由此排除B.
总结：如果if“如果”引导条件状语从句的话,则主从句时态遵循“主将从现”的原则；
如果if“是否”引导宾语从句的话,则从句时态必须根据主句时态和实际情况来确定.
如：I don't know if he is a student.
而：I didn't know if he was a student.

谁给我简单讲下IF条件句I don’t know if Jack .If he ,call me,please.A.will come; will comes B.comes; comeC.comes; will come D.will come; comes A moment,please．I'm checking if Mr.Smith _________ free tomorrow．A．is B．being C．to be D 在If 引导的条件句中什么情况下,主句和从句都得用一般现在时.我问过很多次了.有人说：当if是是否而不是如果的意思的时候,两者都可以用一般时态.I don't know if I’m right.也有人说：当if条件 I don't know if we each have a desting,or if we're all just floating around谁能给解释下 改为同义句 If you don't go ,I don't either .If you don't go ,---- ---- ----. what if I don't know anyone?同义句转换 What,I,anyone,don't,if,Know连词成句 What,I,anyone,don't,if,Know,连词成句 llukyly!i made choice,even i don't know wether right or wrong 谁能给我翻译下啊 开头even if you don't like me有一首英文歌大概开头就是even if u don't like me,麻烦给我说下歌手和歌名! I don't know if it __tomorrow.If it__,I will stay at home.这句话中前面是宾语从句,后是条件状语从句可是我不知道怎么分清楚?感觉都一样哦.能教我一个简单的方法吗?错了,前面是宾语从句,后面是条件状 What if I don't know anyone?同义句What __ __ __ if I don't know anyone i don't care if he breaks his neck!这是什么句是条件状语从句吗,如果是为什么主句用“i don't care ”——一般现在时,我记得条件状语从句的主句是一般将来时或祈使句请解释一下 英语条件句 conditional if 改写句子是,怎么判断是第几条件句零条件句,第一条件句,第二条件句,第三条件句 的构成 假如IF 后面是过去式,后面的句子跟的是现在式,这个句式是第几条件句给我讲 翻译一句简单的英语.理解有点歧义but if you don’t have it, you don’t have it. 原话是：We don’t waive the SAT I score, but if you don’t have it, you don’t have it是什么意思?是说如果你没有SAT1那就不管他还是 I can't see anying if I don't wear my glasses改为同义句 I don't know how I can swim well.（改为简单句） I don't know ________ _______ _______well.I don't know how I can swim well.（改为简单句）I don't know ________ _______ _______well. If you don't listen to me I will give you some colour to s .请给我翻译一下. 英语中条件句条件句1.I f you don’t hear from me by next Friday,you__(assume)I’m not coming.我填will assume,可答案是can assume2.I will let you into the secret only if you ______(promise)not to tell anyone else.答案为什么是will