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问题 if句的省略

If not, if so, if possible, if necessary等这些短语在使用的时候是只要表示这些意思时就可以用还是要考虑if 引导从句中主语是否与主句中的主语一致才可以用?

问题 more foreign是什么用法

We could not have felt more foreign.这里的more foreign是什么用法？foreign 可以用比较级吗？更外国？

问题 就on the flooor提问

She always put her toys on the floor.对on the floor提问?

问题 关于provide sb with sth的疑惑

Your speaking allows native speakers to judge what levels you are at and then adjust their speaking downward to you, providing you input that is more easily understood. 为什么input前面没有用with?

问题 were each introduced的each用法

老师您好。我想问下，例句：Sixty toddlers were each introduced to an adult tester holding a plastic container.其中each是修饰什么的。是不是要还原成主动语态：A introduced each sixty toddlers to an adult tester...。这样是修饰sixty toddlers的，这样正确吗，...

问题 In France, on the other hand, the head of the state is a president.这句话里为什么不去掉a（president在这里作表语且独一无二，不是应该省冠词吗？）

这是外研版高中英语教材中课文的原话。

问题 单词在被修饰后还具有原来的词性吗

...的情况下，还是原来的词性吗？比如，定语修饰名词我懂I prefer apples that are from XinJiangapples 还是作为名词，作宾语。但somewhere 在作为副词，在被定语，等之类的修饰后还能作为副词吗？Don’t take me somewhere that is full of noisy.Take me ...

问题 这两个表达是否正确(涉及现在完成时与次数连用)

I've been married and divorced three times in ten years.I've been married and divorced three times since I was 20.为什么问这个问题，因为我不知道表示次数与表示时间段的状语，是否可以连用。另外能否告诉我在哪里可以找到类似语料库的东西，验证我...

问题 关于附加问句的疑问

1. I don't think Mary is happy, is she?(*do I?）2. You don't think Mary is happy, do you? (*is she?)3. He doesn't think Mary is happy, does he? (? is she?)有疑问请教：1) 附加问句的背后逻辑是什么？是语意导致的吧？2) 如果抛开附加问句，三个句子陈述部分的语...

问题 并列的play the piano and violin可以省略冠词吗

表示弹钢琴和拉小提琴时，是说成 play the piano and violin，还是说成 play the piano and the violin，换句话说：并列的play the piano and violin可以省略冠词吗？

问题 that, one, the one, those的区别

单选题:The style of the campus is quite different from (    ) of most Chinese universities where visitors were amazed by the complex architectural space and abundant building types.A. that  B.one  C. the one D. those请问各位老师为什么选择A，麻烦清晰解释一下，给的这几...

问题 help out around the house怎么理解

You watch TV all the time and never help out around the house！这里的help out around the house怎么理解呢？

问题 the other day的两点疑虑

the other day 的意思是“几天前”，与 a few days ago 意思差不多。对此我有两个疑虑：一是：是不是句子中出现了 the other day，句子就一定要用一般过去时。二是：the other day 除表示“几天前”外，它还可以表示“另一天”吗？

问题 the color of which的用法

There are 12 umbrellas in the doorway, the color of which is blue.老师这句话中的the 名词 of which用的对吗？是只要替换color就都可以用吗？有什么需要注意的吗？

问题 keep silence与keep silent的区别

keep 作为系动词，后面接形容词是很正常的。如：They required him to keep silent. 他们命令他保持沉默。He ordered her to keep silent. 他命令她保持沉默。请问，为什么有时也用名词呢？说 keep silence，两者有区别吗？