...helmets, almost invariably wearing instead their peaked caps, which called to my mind a group of vultures with their beaks twiddling this way and that as their heads swung.请问各位老师，红色的部分“as their heads swung”是做定语从句修饰that吗？谢谢解答！
语法填空题:All these years these
talented writers __________ (contribute) articles to our magazines.这里答案给的是have been
contributing.这是唯一答案吗？为什么要填完成进行时态不能填过去时或者现在完成时？
If you find yourself in danger from a forest fire, first of
all, stay calm. Cover your face with.... Then go to a safer place if you can...请问这里为什么用 in danger from？为什么不用 in danger of？
thank sb for doing sth 例句:(I) Thank you for asking me to talk about essay。短语for doing sth.是做什么成分？这个短语中doing的逻辑主语是sb吗？这是一种什么省略现象。我查了状语从句的省略需要主句从句主语一致，但是短语for doing sth，主语如...
在一篇口语对话中看到下面的对话： Bob: Well, Fred! Come right in! Haven’t seen you in a month of Sundays! Fred: Good to see you, Uncle Bob. 请教一下，其中的 a month of Sundays 是什么意思？
John received an invitation to dinner，and with his work ________，he gladly accepted it.A．finished B．finishingC．having finished E. having been finished答案A，没有问题。(with sth done结构）我的问题是：B，C和E是否可以？由于finish 既可以用作vt, 又可以用...
...如I've always preferred cities .那么这句话I've always gone to school by bus为什么不用静态动词？问题二：完成时的否定句是不是都是动态动词，例如I haven't known it for a long time.这样的句子不符合逻辑？
... that有的是短语，有的是定语从句吗？1.He immediately offered to fetch her others; all that his library afforded.他立刻要另外拿些书来给她，把他书房里所有的书都拿来。2.All that fuss over a few pounds!为几英镑就那么大惊小怪的！3.It isn't all that col...
...来
3. could可以对过去，现在和将来进行推测
I could go to Japan this summer 表将来
That could be my train 表现在
Tony could be pretty naughty when he was a child. 表过去
Could this be done in those days? 表过去
表现在、过去和将来分析的对吗？还请...
out there用做强调我已注意很久，只是这个用法注意到的人少吧，没查到什么资料。例句：
Can anybody out there see me, because I can't seem to see myself who out there needs a PC?
麻烦老师分析一下这种 out there 的用法详情！
Since I left school, my parents have started to treat me like an adult. 自从我离开学校后，父母就开始把我当大人看待了。since 的意思是“自从……以来（一直）”，从理论上讲与它连用的主句谓语动词应该是持续性的才对。但本句中的 start ...