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问题 since主句的现在完成时可以用has had to吗

He has to move about in a wheel-chair since five years old. 按语法规定，这个句子不太对，因为 since 前面的句子应该用现在完成时，但这个句子的谓语是 has to，它如何变为现在完成呢？难道是用 has had to? 像下面这样用？ He has had to move ...

问题 Americans know a lot about their troubles介词短语作状语还是定语

... lot 好一点？还是说都凑合呢？另外：What do you know about doing business in China? 这里的介词短语 about doing business in China 看成状语还是后置修饰语好一点呢？看成方面状语好，还是看成后置修饰语修饰 WHAT 好？

问题 as from与from的用法区别

The new law comes into force as from midnight tomorrow. 新法律从明天零点起开始生效。句中的 as from midnight tomorrow 表示“从明天零点起开始”，查了一下词典，as from 的意思是“从……起”，而单独用 from 不是也表示“从……起”吗？那这...

问题 go to kindergarten(上幼儿园)要不要冠词

要表示“上学”，习惯上是不用冠词的，如 go to school。但是，若表示“上幼儿园”呢？是说 go to kindergarten 还是说go to the kindergarten？要不要冠词呢？谢谢！

问题 fail to do sth的意思与语法分析

请问下面各句中 fail 是什么意思？另外 to do 不定式作什么成分？I failed to catch the bus.He failed to keep his promise.

问题 动词ing表将来时的2个疑问

(1) 非延续动词ing,是否不加时间点,就能用来表达将来时了？The train is arriving (any minute). (2)延续动词ing,如果加一个未来的时间，也可以用来表将来时吗？You'll get a busy day tomorrow Delphine is visiting your play group.

问题 Against up to 5 enemies.是否有语法错误

老师 the fighter fight against up to 5 enemies.老师在这个句子中，agianst作为介词后面接介宾语， up to作副词修饰5， 这句话是否有语法错误呢？ 

问题 这里v+ing是做什么成分

Aeroplanes have the reputation of being dangerous and even hardened travellers are intimidated by them. 这里ving放在of 后面,应该是动名词吧,毕竟现在分词是形容词性质,不能放在介词of后面. 然后being dangerous与of 构成名词所有格修饰reputation,是吗? 所...

问题 make/turn ... into 是双宾还是宾补结构

比如 make(turn) the applause into rhythmic music. 这种结构是双宾还是宾补? 如果是双宾的话,前后倒过来该怎么写呢?

问题 would和should表推测时候的用法

He _____ be here soon. He is usually on the time.A. would  B. could   C. should   D. must这题给的答案是should，请问曹老师would表示推测的肯定程度要高于should，为什么不能用would呢？

问题 比较级后的动词

...aller than she is.(前面是必动词，后面she后面也用必动词) 2.The woman weighs less than he does.(前面是实义动词weigh，he后面用does)

问题 be to 含义用法困惑？

...need to create a network of ocean sanctuaries covering at least a third of the blue planet, if we are to take climate crisis seriously.请教老师：这里的if we are to take...中的are to是表示将来还是计划安排呢？去掉如何，即if we take climate seriously 可否？用不用are t...

问题 关于不定式作方面状语的疑问

1.He is shy to ask for help.方面状语2.He is interesting to talk to.方面状语3.He is happy to hear the news.原因状语请教老师我的这几句话分析的对吗，主句主语既可以作方面状语的主语，也可以作它的宾语，具体要看形容词的意思。

问题 关于主句是一般过去时从句的时态问题

题目：She told the children that what their father had said ______(be) wrong.这里是填is还是was？我查到的是从句表示真理和客观事实时可用一般现在时，但这个客观事实的范围就很大了。原文章

问题 (请教曹老师)定语从句中省略用法

1.图中长难句分析中最后一行说as suggested by the social psychologist Daryl Bem是非限制性定从的省略，是省略了it was吗？不是只有状语从句才可以省略吗，定语从句也有这个用法？有的话麻烦老师讲解一下这个用法2.as 引导的可以看做是...