问题 be+adj.+enough+不定式(用主动式与被动式)

在“be+adj.+enough+不定式”中，当句子主语是不定式的逻辑宾语时，这个不定式是用主动式还是用被动式？The dictionary is small enough _____ (put) in your pocket. 这本词典小得可以放在你的口袋里。希望专家老师能给出一个规律性的结论，...

问题 It is said that…后的从句可以用过去时态吗

It is said that…中的that从句如果用一般现在时是很正常的。如：It is said that he’s got married. 听说他结婚了。It is said that honesty is the best policy. 常言说诚实是上策。It is said that thirteen is an unlucky number. 据说13是一个不吉利的数字。It is...

话题 It wasn't long until...还是It wasn't long before...

问题 这个句子是形式主语it吗

  It's time for sb to do sth句子结构，it是形式主语吗

问题 虚拟语气(It's strange you should do/should have done)

It is strange that you ______ (say) such a thing.答案是 should have said。名词性从句不是应该用should do 吗？答案为什么不是 (should) say?

问题 be successful后面可以接介词at吗

...nding a new house? 你想找所新房子找到了吗? 请问可以将 be successful in sth 中的介词 in 换成其他的介词吗？比如用介词 at 等。

问题 He ordered the books to be sent at once是虚拟语气吗

He ordered the books to be sent at once.请问老师这句话有虚拟语气吗？从哪里看出的？谢谢老师的回答。

问题 地点状语和地点介词短语同时出现在句子中的修饰关系

...y in the morning.New products are developed nearby at our labs in St Denis.It must be buried somewhere in deep grass.这个问题困扰我很久了，一直没搞清楚。

问题 在半助动词之后用不带to不定式

...p;  在半助动词之后用不带to不定式。例如：   It's sure to rain.   Have you got to go to the dentist's today.   I happened to be out when he called.请教老师：上面3个例句不都出现了不定式to吗？是不是书本印刷错误了...

问题 Downstream of ... 中的downstream是什么词性

1. It will push SMS messages to people downstream of a flood event giving them up to 24 hours advanced warning.2. Valve must be installed downstream of receiver tank.请问这两句中downstream ...

问题 动词前面最多可以有几个助动词(must have been being)

有人说，一个动词前面最多可以有四个助动词，并举例如下：Jim must have been being told while I was outside. 请问这个说法是对的吗？

问题 instead前后并列句，不定式要不要省略to

...impose on what you write, instead, _____ the selection of topic, audience, and purpose to guide your choices.A. which allows         B. allow     C. to allow D. to be allowing

问题 分析：It's just as easy to put away for whatever comes next.

上面图片里这句话:It's just as easy to put away for whatever comes next.我看不懂这句话，这句话里是不是有特殊的句式和短语？请帮助详细讲讲。

问题 it作为宾语归属哪个动词的疑惑？

I'd like to have it to refer to occasionally.我想偶尔参考一下。请教老师：refer to的宾语应该是it，但是have的宾语也是it, 这么说，it怎么会既是have的宾语，又是refer to的宾语呢？

问题 这一段的三个it分别指什么

I love ping-pong, but I cannot play it well. It is difficult for me. I only watch it on TV.这一段中的三个it分别指什么呢？