问题 before主句的时态可以是现在完成时吗

老师好！向老师请教一个句子：Though they’ve been around long before we walked on the earth, sharks still attract us to this day.请问：they’ve been around long before we walked on the earth 中的 have been around 的时态是否合理，是否应改为had been around？

问题 这里怎么理解not so as

老师Teenagers today do not have so many social activities as they did in the past.这句话怎么理解呢？

问题 according to还是by

It is just 8 o’clock _____ my watch.A. by     B. according to请问如何选？

问题 这是with复合结构还是分词短语作非谓语

I found myself, without even knowing how it happened, staring at my egg money.请问 without even knowing how it happened 是什么成分？是 with 复合结构还是分词短语作非谓语？

问题 double + the amount + than的语法知识提问

...o produce double the amount of coal,oil and gas in 2030 than is consistent with capping warming at 1.5 degrees Celsius. Note the following: climate policy should strike fear into the hearts of fossil fuel executives, not delight them. So what have some of the world's worst polluters found to like a...

问题 介词可以修饰数词吗

...1,001 and $15,000 worth of Raytheon stock on February 24 this year — the day Russia started its operation in Ukraine.佛罗里达州共和党议员约翰·卢瑟福在今年2月24日购买了价值1001美元至15000美元范围的雷神公司股票，正是这一天俄罗斯开始在乌克兰发...

问题 请问I put my watch on the table.这个句子是什么句型？

是“主谓宾”还是“主谓宾宾补”？

问题 感叹句提前疑问

My son is now of driving age.这里的now该怎么理解？What a brilliant night it must have been.这里的what a brilliant night可以理解为一个名词提前吗？

问题 which的用法

...是疑问限定词，还是融合型关系限定词？感觉都能转化成any... that结构，算是关系限定词吗？Which/what book do you like ?Whose bag is this? which,what,whose应该是疑问限定词吧，疑问限定词只能用于简单句中吗？还请老师举例说明下疑问...

问题 独立主格结构的用法

He is excited with so many places of interest to visit. 这里的to visit是做定语吗？这里的with是短语中的介词还是独立主格的标志词，怎么判断？独立主格中的非谓语都做定语吗？

问题 My train leaves in 11:00 am tomorrow.为何这里用一般现在时

问题 through,against,with,across的区别

—Thanks for looking after me ______ my illness, Millie.—Don't mention it. That's what friends are for.A. through   B. against    C. with    D. across请问哪个答案是正确的？为什么？谢谢！！

问题 情态动词would的用法疑问

I hid the long black bag in the garage 2 days ago. Tonight, in the dark, I _____ finally take it away.If everything went OK, it would be done by the morning. But I had to be sure no one saw me.横线处备选项：A. will    B. would   C. could   D. may辛苦专家...

问题 强调句还是定语从句

...p;not focus on anger. At the end of the day, they walk away. They choose to end it. And it's an easier choice that they should next time.老师，问题在最后一句：1. should后面省略一些成分了吗？&nbs...

问题 关于not so much... as...的疑问

1.He isn't so much a doctor as a professor.2.He isn't so much (of) a doctor as she is.3.He isn't more (of) a doctor than she is.4.He isn't so much like his father as like his mother.5.He isn't so much like his father as his brother is.6.I'm not so much interested in your appe...