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问题 语法填空里什么时候用不定冠词和定冠词

语法填空习题里出现了这样一个空：These are called polymorphic. "polymorphic" means______ ability to take different forms. 答案给的是 the，请问此处为什么不能填 an。前文也并没有出现 ability。一般来说语法填空里填定冠词都是前文有出现同样词...

问题 雅思阅读中一句话的语法问题（have还是having）

原文: Glass and Singer (1972) showed that situations in which there is intense noise have less effect on performance than circumstances in which unexpected noise occurs. 请问：句中 in which there is intense noise have less...have 不应该是 having 吗？

问题 百分数修饰比较级以及as...as结构的理解的问题

Tom is 150% heavier than Jack. Tom is 150% as heavy as Jack. 挺搞的，这两个句子意义上有什么差异呢？ 如果Jack是100斤，那它究竟是想表达Tom是150斤?还是250斤?

问题 如何理解if you must中must的用法

-May i smoke here?-If you must, choose a seat in the smoking section. 意思我理解了就是 如果你要非要抽烟,请... 但是为什么不能是could 即 如果你可以的话,请... 还有 may 可以表示愿意吗？即 如果你愿意,请...

问题 关于 used to know 用法的疑问

...样一个句子：He came across a person he used to know when he lived on the farm. 他偶然碰到了一个他过去住在农场时认识的人。我对句中的 used to know 有些不解。因为 used to 的用法特点是“强调今昔比对”，即“原来……但现在...

问题 英汉两种语言在表达上的差异

...采纳普通网友的答案。【英语问题】He left three days before the accident happened.这个句子如何翻译？请选择：1. 事故发生的前三天他就离开了。2. 事故发生前的三天中他就离开了。3. 事故发生的三天前他就离开了。如果选择其中一种翻...

问题 be soon in 是固定用法吗（新概念三第11课句子）

All the things I had packed so carefully were soon in a dreadful messbe soon in 是个常见的固定用法吗?这个短语表示不一会变成的意思？为什么不是 be soon into?

问题 if ever she 或 if she ever 是一样的吗?

此结构中ever位置有讲究吗? if ever she 或 if she ever都可以吗?意思一样吗? She had told him to come straight in (if ever she / if she ever ) failed to open the door.

问题 besides doing还是besides to do

...ides doing all my schoolwork, I chat with my friends, watch films and read the daily news and other interesting articles.这是北师大高中英语必修一第1单元中的一个句子(p8)。besides是介词，按理说后面接动词时用动名词是可以的。但我在词典上没有查到这...

问题 时态选择题（涉及过去完成时等）

We ______ that you would fix the TV set this week. — I'm sorry. I ______ , but I've been too busy.A. had expected; had intended to B. are expecting; had intended to C. expect; intend to D. expected; intend to这题答案选择A，不明白这类时态的确定就是靠翻...

问题 虚拟语气句中的动词前可以去掉would直接用原型吗

下面这句话： This would be especially unfortunate for our children for they become so addicted to the Internet that they might never be exposed to social interaction. 此句是虚拟语气，句中的become为何用动词原型，是become前省略了一个would吗？求解，谢谢～

问题 as引导是方式状语从句还是原因状语从句

... you have a tight deadline, but I would like to have a say in what goes in the videos. As a client I must be able to have a say in what we want as I feel we know how best to advertise our homes.as I feel we know how best to advertise our homes，as引导是方式状语从句，还是原因状语从...

问题 A plus B作主语谓语动词用单数还是用复数(主谓一致)

下面两句用的都是单数，但可以用复数吗？ One plus six equals seven. 一加六等于七。 Since when does the $42 plus $5 service charge come to $48? 从什么什候开始42美元加5美元的服务费等于48美元了?

问题 for to 以及 for sb / sth to do 的用法和意思

for to ice loving you.for you love to fight.for the sky to say I love you. 请问这三个句子中for的用法和意思是什么？

问题 to be had 用法疑惑？

Is there any golf to be had near London ?Oh, yes, any amount.请教老师，to be had中的had是什么意思？ 这是不定式的被动结构吧？我的疑惑是：1）There is 已经表示某地存在某物=有的含义，为什么后面又出现了一个表示有的实义动词had呢？2）不...