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问题 how it came to be后面为什么没有表语

He said: "The magnetism on our planet allows life to thrive, so we want to understand how it came to be." 这句话的it came to be为什么没有表语？是有省略吗？

问题 how+n+to do与not enough的否定转移以及现在分词作后置定语还是动名词复合结构

...He'll be researching how bridges and culverts that have been installed to allow tidal waters to move underneath roads between the sea and the salt marshes. Well, they are often too small. Student：I guess that would result in not enough tidel water flowing into the marshes to maintain the natur...

问题 为什么比较不平行

1. According to a recent study, retirees in the United States are four times more likely to give regular financial aid to their children than to receive it from them.✅2. According to a recent study, it is four times as likely that retirees in the United States will give their children regular...

问题 commit 动词2种结构使用辨析？

Twenty years ago African government committed to eradicate polio.牛津词典上显示2种结构：The President is committed to reforming health care. 总统承诺要改革卫生保健制度。 Both sides committed themselves to settle the dispute peacefully. 双方承诺和平解决争端。&...

问题 am supposed to be doing sth 怎么理解

Elements of the periodic table that i'm supposed to be memorizing，theorems that i'm supposed to be understanding.1.请问在这里am supposed to be memorize表示的是“应该”，表示责任义务吗？我应该正在背诵记忆（元素周期表）；但是实际情况是说话人最近很...

问题 for sth 和 to do sth 比较含义

...总是系着领带。2)People who work in offices are frequently referred to as "white-collar workers' for the simple reason that they usually wear a collar and tie to go to work.坐办公室的之所以常常被称作“白领工人”，就是因为他们通常是穿着硬领白衬衫，系着领...

问题 不定式符号to有词性吗？

不定式符号 to 是什么词性？是介词吗？和介词 to 又是什么关系呢？

问题 groom sb to do

groom sb to do sth这里的to do是宾补吗？groom这里是接复合宾语的用法吗？

问题 go to the mountains

八年级上册中的go to the mountains, 这里为什么用复数呢？ go to the mountain可以吗？

问题 两个小问题

You might even be tempted to assume that humanity has little future to look forward to. 1. be tempted to do中to do是结果状语吗？2. to look forward to是不定式做future的后置定语与future为逻辑上的动宾关系吗？

问题 owing to 不能作表语吗

His success is owing to his hard work. 这句话不对吗？有人说 owing to...不能作表语。

问题 介词of与to的用法与替换

It was on the way to the station. 那是在去火车站的路上。the key to the door 这个门的钥匙老师，把上面两句里的to换成of,可以吗，意思一样吗？介词有没有指方向，位置等这些用途吗？

问题 think to do sth 的用法疑问

有这样一个句子，句中的didn’t think to ask 如何理解？为什么不用didn’t want to ask？I didn’t think to ask him his name. 我不想问他的名字。

问题 runs across to为什么run后有两个介词

She often runs across to the neighbour's house to have a good gossip.她经常跑到邻居家去闲聊。runs across to为什么run后有两个介词？run across是一个动词词组，是及物的，为什么还要加一个to呢？

问题 go to the countryside 为什么要加the

go to the countryside 为什么要加the?  表示去哪个地方加the和不加the 的区别是什么？地点前加the 的表意是什么？go to the schoolgo to the beachgo to the hospital加the的用意是什么？先感谢各位老师的答疑解惑！