话题 什么情况不可以用现分代替定从

话题 什么情况下，不可以用现在分词代替定从

话题 what作主语时谓语动词用单数还是复数

话题 some作主语时谓语动词用单数还是复数

问题 怎么理解like none elsewhere意思

Australia, an isaland continent cast adrift during the time of dinosaurs.Isolated from the rest of life on land for millions of years, the animals cast away here are today like none elsewhere.怎么理解like none elsewhere意思？这里的like是什么用法?

问题 on rainy days还是in rainy days

表示“在下雨的日子里”，是用 on rainy days 还是 in rainy days？如果两者都可以用，它们有区别吗？谢谢！

问题 这句话里的as起什么作用

My husband is freelance : he works for several different  companies as and when they need work done – he’s a computer programmer.这句话里的as起什么作用？感觉是多余的。

问题 比较状语从句中(just) as....so中so是什么词性和成分啊?

As water is to fish, so air is to man.(Just) as we sweep our rooms, so we should sweep backward ideas from our minds.

问题 It depends on an issue of which is the best.是个什么从句

问题 crimes committed(为什么要用过去分词)

Although sexual and violent crimes have increased by 13 percent, they remain only a tiny fraction of the total number of crimes committed each year.committed为什么要用过去分词？什么结构？

问题 关于限定词的问题

...        数量词 ①倍数词与分数词 doublel half/ twice/ three times one- -third/ two- -thirds ②序数词与基数词 first/ second/ third/ one/ two/ three nex/ last/ past/ other/ another③量词 many/ much/ lilel few/ more/ mosl alot of/ a number of  plenty of several 后位 冠...

问题 该用名词、形容词、还是动词

比如前方路口在修建，提醒人生不能开，是用Prohibition名词，还是prohibitive形容词，还是prohibit动词？

问题 这个不定式为什么省略to

...湖南高考的一道选择题：Every day ______ a proverb aloud several times until you have it memorized. A. read       B. reading     C. to read       D. reads答案是 read，为什么不选to read呢？这个不定式为什么要省略to呢？好像...

问题 send用法疑问

The front desk clerk asked them to send in some photos, and then they made flyers together and distributed them around the area.(send是及物动词，可直接说send sth，难到这里send in表示往来/里发送，而send sth 指往外发送吗？所以此处不能用send some photos)

问题 不定式作目的状语和结果状语的区分

... produce a unique millenium technology calendar that gives thelatest dates when we can expect hundreds of key breakthroughs and discoveriesto take place.有老师将to produce...解释为表结果的状语。请问，这个不定式是否是作结果状语呢？另外，如果不定式只是to do这...