找到约 27000 条结果

问题 从句中过去时和过完时选择

The hole in the stratospheric ozone layer over Antarctica did not grow as fast this year as it did on average between 1991 and 2006.为什么从句不用过去完成式had done呢，表示过去的过去啊

问题 句子翻译

University of Perth Professor David Johnson says it's only changed the way Chinese investors do business down under.

问题 介词的选用？

to help children undergoing rehabilitation for a range of conditions这里的介词为什么选for?

问题 句子分析

If ratings fall short of advertiser expectations, Fox will likely have to issue make good ads.issue make是什么意思？

问题 一般将来时的句子中什么时候要加be

请问一下：一般将来时的句子中什么时候要加be？例如： He will be back in two days. 句型是 主语+will+动词原形+其他，back已是动词为何加be?

问题 afternoon 与 afternoons 用作状语的疑问

...副词)。如：I’m always busy afternoons. 我下午总很忙。He is in the office afternoons. 他下午总是在办公室。请问一下：单数形式的 afternoon 也可以用状语吗？上面两句中的 afternoons 可以换成单数形式的 afternoon 吗？谢谢老师解答！

问题 play the match用于被动语态

辅导书上的一个例句： The match will be played in the new stadium. 比赛将在新体育场进行。 play the match 可以这样用被动语态吗？谢谢！

问题 while做并列连词时前面必须有逗号吗

She thought I was talking about her daughter, while in fact I was talking about my daughter. 这是卷子上的一个句子，句子能看懂。请问老师 while 前面必须有个逗号吗？查了几个句子都有逗号。谢谢老师。

问题 appeal against是什么意思？

The US government is expected to appeal against the ruling. Here's Jonny Dymond in Washington.美国政府可能呼吁反对该判决，约翰尼·戴蒙德在华盛顿报道。我查了下字典appeal against是上诉的意思。那么上述翻译对么？ 上诉和呼吁反对还是差很多...

问题 you girls, they girls中人称代词的用法

You girls stand in the front row, will you?为什么用 you girls？那难道可有 they girls?反义疑问句为什么用 will you 结构？

问题 make sure 后面为什么用过去完成时

In future, I would make sure I'd checked out whoever was fitting it with their previous customers.请问 make sure 后面的从句中为什么用过去（完成）时而不用现在（完成）时？

问题 four years前面是否可以看做省略it was

In 1965, four years before Neil Armstrong walked on the Moon, Barbie became an astronaut. 这里的four years前面可以看做省略了it was吗？

问题 分词短语 替代问题

① Taking off his shoes, Ram walked into the house. 为什么等于(=Having taken off .........)② Having broken her leg the last time she went, Lucy decided not to go on the school trip this year.  此处又不等于 （≠ Breaking her leg........）③ Having hunted close to extinction, th...

问题 and是多余的吗（and to run pumps）

There is electricity in our house and to run pumps.这里为什么有and呢？去掉and不也是可以的嘛？

问题 This was the crucial period which modern drinking

改错题，答案是在which前加in,可以把which改为when吗