The transition will be politically hard in places that have invested a lot in being covid-free.请问老师这里的being covid-free是动名词短语作in的宾语吧?我疑惑的是为什么要用being呢，不可以invested a lot in covid-free places吗？
...be in a university registrar's office with your father taking charge.这里的your father
taking charge是什么语法结构或用法呢？就是一个名词或代词加现在分词的这种表达。2.I am as old as，if not older than，most faculty
members.if not older than是作为插入语，插...
...间出现了I do not know why he said this......用了一般现在时。我的理解是：如果用一般过去时I DID not know why he said this （或也可why he had said this 吧？），则含义是：当时我不知道...而现在采用了一般现在时I do not know why he said this...含义...
以下是柯林斯词典关于 downward 的例句，我感觉都可以换成 down。难道是 downward 的方向感更强？此外，类似 fell down from 的短语可以换成 fell downward from 么？ADV If you move or look downward, you move or look toward the ground or a lower level. ...
......too结构刘老师在前面帖子中讲过是属于否定转移。下面的这个句子的翻译还是不太理解：You can’t be too careful in doing the experiments. 做实验你越仔细越好。not否定too careful，表示“不太仔细”，你做实验不太仔细？咋感觉和原来...
原文：Fruit, meat, milk and vegetables all come from farms. Farms are
important because they supply shops and supermarkets with food, but what is it
like on a farm and how do they work?Every year, there is an Open Farm Sunday. Around 350 UK farms will be
free for visitors to explore and enjoy. Ac...
...le I was walking in the street.问题: 请教曹老师，为啥感官动词的不定式宾补要省略to 呢？是因为to do 不定式是表示后于谓语时间的动作吗？另外，省略了to,那这和doing表示和谓语同时发生有啥区别吗？3. Some of the contents of this gas , such ...
...词连用。如：I’d love to have my own room. 我喜欢有一个自己的房间。She can’t even write her own name. 她连自己的名字都不会写。You are old enough to earn your own living. 你已经到能自食其力的年龄了。由于形容词性物主代词在本质上与所有格...
...appy with the way the work had declined with each subsequent edition.这里的the way，应该理解为，“她对作品衰落的方式不满意”，还是“她对作品衰落这一方式不满意”？the way 是后面句子“the work had declined”的同位成分，还是代表“the work had...