各位老师好，问题如题。比方说下面这个句子：Toxic substance will be left behind by using these facilities.这个句子是不是不对？改成：Toxic substance will be left behind by people/people's using these facilities.是不是就对了？谢谢老师。
...词of)，且要用被动式表示被动含义：
This book is worthy to be read [of being read]. 这本书值得一读。然后用海词词典查了一下worthy的用法，有两个例句：1.This is worthy mentioning. 2.This is worthy of reading.请问这两个例句是正确吗？
...five times that of 1976.3)The
output of cotton in 1987 was five times what it had been in 1976.4)The
output of cotton was 400% greater than in 1976.上面，2)为什么可以去掉as much as呢？而且奇怪的是1)和2)这2个句子后面都变成了of 1976, 而不是in 1976 ？3)句been的表语...
...out you," he said with a grin. "Then I learned that you were a
member here and I could not resist asking someone to point you out to me.
Though, if you'd looked the least bit as I always imagined I don't think I'd
have d-dared to approach you. You see…I grew up with the idea that you were at
least...
Such exchanges can be one of the best ways to improve your conversation skills. 其中：1.to improve your conversation skills 是后置定语吗？或者 the way to do sth 是固定搭配。2. 如果不是固定搭配，Such exchanges can be one of the best ways improv...
I should❶ like to call on you at a time that is convenient.I would❷ be grateful if you could❸ find a moment when we might❹ be alone.两句话来自年代剧里书信里的话。我作了四处标记❶～❹。除了❷是助动词用于虚拟语气，不带有情态意思，其余三处都...
... a cone-shaped va-
riety: the ruffled leaves were at once meltingly tender and crisp-edged,
buttery and sweet, crisscrossed with a salty, garlicky seaweed gremolata and
hiding pearls of fregola glazed in a tart, fruity burned-onion broth.crisscrossed with a salty 和 garlicky seaweed gremolata.......
But the cult of the authentic and the personal, "doing our own thing", has spelt the death of formal speech, writing, poetry and music.请问 the authentic and the personal是the+adj表示一类人的用法吗？但是在这里也不能翻译成“...的人”吧？
...句均出自词典)1. The area received three times the amount of rain it got last year.three times修饰名词amount，此时是作为前位限定词使用的。2. Sound travels four times faster in water than in air.four times修饰副词比较级faster，此时是作为副词使用的。...
原句：Children as young as 5 or 6 were painting flowers, fish and animals with the skill and confidence of an adult; calligraphers 9 and 10 years old were producing works that could have been displayed in a museum.参考译文：年仅5, 6岁的孩子就带着成人的那种技巧与自信在画...
...________________(过了好长时间他才发现) what had happened. 1.It took a long time for him to find what had happed.2.It was a long time before he found what had happened.3. It had been a long time before he found what had happened.4. After a long time, then he found what had happened.&nb...
...它们的区别在哪里？If a war breaks out, many other countries will be affected. 一旦战争爆发，许多国家都要受到波及。If a war should break out, many other countries will be affected. 一旦战争爆发，许多国家都要受到波及。用了should的句子，好像也不是...