...ll forms of life need water for existence. (vital) =2. Water is vital to/for the existence of all forms of life.3. Water is vital to/for all forms of life for existence.我的问题是，第3个句子是否也正确？ for existence 是目的状语？
They made a protest to the authorities that was embarrassing.（夸克，语法大全，18.42）
作者说这句话等于they made a protest to the authorities in a way that was embarrassing.那么原句里边that指代的是整个主句部分？可以这样用吗？
According to Cisco, a maker of networking gear, video accounted for 70% of global internet traffic in 2015, a share it thinks will increase to 82% by 2020.请教一下这个句子的结构和句法成分?并列句还是定语从句或同位语？各部分充当什么成分？
...lone 2.The bad news was that he
could be a very dangerous person he choose to be向刘老师请教，句子1中 would have been 后为何可以省略 afraid，句子2中choose to be 后为何可以省略 a very dangerous person
①He must have left Beijing,（hasn't he?）②A：Those tomatoes are huge!You must have watered them a lot! B：Yes,I （did）.They ought to be ripe enough to pick by next Friday.为什么①用现在完成时，②用一般过去时，②能不能用“Yes,I have.”？
... a plant-based diet modeled on India risk offering another whip
with which to beat already vulnerable communities in developing countries.老师，Which is why做主语，calls for 做谓语，a plant-based
diet做宾语，on India 做状语，with which to
beat already vulnerable communities in dev...
A joke stored on
a website can be viewed by as many people as _____ want to view it, as many
times as they want to, as quickly as they can request it. A. those B. those who
C. they D. 不填
...为非谓语动词修饰前面的infrastructure 那这个required后面的to make 也是非谓语动词这里是两个非谓语动词连用吗？The infrastructure required to make a physical newspaper—printing presses, delivery trucks—isn’t just expensive; it’s excessive at a time when onli...
The BBC have broadcast a message in which they have asked a certain Mr Green to go to the Overhill Hospital when doctors are treating his wife after a severe stroke.这里的when不能翻译成从属连词，应该是并列连词吗？