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问题 现在完成时的疑惑

Flora looked out of the window and found it ______ heavily.A. snows B. snowed C. has snowed D. was snowing选项c为什么不可以呢？

问题 come doing的意思

When he came staggering out of the garden, blood was running from his nose and mouth. What had been the finest house in the neighborhood came crashing down. 这两个come doing是不是都是来进行某事的意思？该怎么翻译呢？

问题 时态的运用 过去时和过去完成时

...were worn away by natural forces, such as wind and water. The drawing has been cleaned up and will be preserved.

问题 have always been (done/doing) 区别?

1这2个结构,用在现在时态时，always还有什么作用，可以去掉吗？2have always been doing 和 have always been done意思一样吗，是否可以互换？比如这个例句：She's  always been willing to lend him  a hand whenever he's in difficulty.

问题 either...or...使用困惑？

1）Either John or Mike damaged the furniture.2）Either John damaged the furniture, or Mike did.为什么句1）不能这么说，而要说成句2)呢？

问题 or above 的用法

i5 双核及以上:  i5 dual-core or above. 这里above是什么词性？前面是名词，那or后边接并列成分的话，词性是否应该一样？

问题 描述某人过去或历史人物的出生日期时用什么时态

...mfortable about the wet sand in her hands, I’m reminded of a time when I was unwilling to get my hands a little dirty在这里后面是指一种因果关系，而不是对过去的事情进行描述，所以用了 am 这个一般现在时，不过突然有了一个疑问，当告诉别人自己的...

问题 长难句分析1

Herdsmen and hunters have also long observed that grazing animals often tend to align themselves facing either north or south, which the researchers suspected was in readiness to escape in either of those directions should a threat emerge.请问：如何分析与理解粗体部分的从句呢？

问题 形容词+介词to+名词这是什么意思和用法呢？

...black dress, simple to austerity, suggested her bereaved condition, and I was innocently astonished that notwithstanding a real emotion she was able to dress the part she had to play according to her notions of seemliness.请教老师： simple to austerity 这是什么结构呢？形容词+介词t...

问题 believe it or not可用于非谓语动词吗

believe it or not 是固定搭配，意思是“信不信由你”，请问它可以用于非谓语形式吗？比如下面的句子，可用不定式或现在分词吗？Believe it or not, they got married soon. 信不信由你，他们不久就结婚了。Believe it or not, he’s given me a loan....

问题 be it倒装句中的冠词问题

The person, be it gentleman or lady, who has not pleasure in a good novel, must be intolerably stupid.There aren't a lot of happy endings for a lot of people, you know. Be it climate change, be it guns in schools.这里gentleman lady climate change前都不需要加冠词吗？是必须不加还是...

问题 过去时态用法的疑问

As I mentioned before, maybe culturally China was quite differently from the experience that I had before. But China as you may know, has a closer relationship with South Africa. So coming here first and foremost I found that the relation between my country and China were very close and very active,...

问题 关于both和housing的疑问

...ng the pandemic, both nationally and worldwide, children and families have been experiencing anxiety and fear for many reasons.They include loss of income and loss of housing or having to move around.她说，在疫情期间，无论是在国内还是在世界范围内，儿童和家庭都因为许...

问题 have been加形容词的疑问

...your message.I apologise for not getting back to your message,but I've been incredibly busy.been按照我的理解应该是静态动词，表示到现在我都是很忙，那么这里是不是省略了时段状语？如果been是动态动词，那么就是已经忙过了，现在可以回信了...

问题 现在完成时态在表示‘从过去一直持续到现在的动作’时的疑问

...d. What's the matter?一I _____ on a sofa because my grandparents have been here to spend the weekend. I can't have a good sleep.A. slept    B. am sleeping    C. was sleeping    D. have slept 标准答案为B，现在进...