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问题 标点符号(and therefore前面应该用逗号吗)

The quality of teaching can make a huge difference to students’ academic performance. and therefore, parents prefer to choose prestigious schools for children.请问老师，这个句子and therefore前面应该用逗号吗？还是说应该用句号 ，同时And要大写？

问题 “他一直等到她将离开”如何翻译

句1: He waited until she was about to leave.  句2: He had waited until she was about to leave.哪句是对的？如果有错，错在哪？

问题 六级阅读句子翻译

Some fish, too, have had limited success vacationing at the lake as less salty lagoons (泻湖) form on the outer edges from hot springs flowing into Lake Natron。句子翻译，另外本句中“vacationing”和“vacation”都可...

问题 关于have后接补语的问题

Have后面可接to do和doing作补语，当这个do为静态动词时我们很容易区分，但是为静态动词时就不好区分了，如，He had his audience to listen/listening attentively。请问这有何区别

问题 关于guarantee的一个用法

He had scheduled classes at the same time as Hegel's,knowing full well that thereby he was guaranteeing for himself few,if any,students.这里guarantee for himself few students是guarantee的什么用法呢？词典没有找到guarantee for 的相关释义

问题 relaxed and dreaming作什么成分

The capsule began swinging gently sideways as we lay relaxed and dreaming.这个从句中,relaxed and dreaming作什么成分,有人说是主语补足语。

问题 as... and although...是并列句吗

As we have already noted, with agriculture and sedentism came diets too closely centered on a single crop, such as wheat in the Old World and maize in the New, and although sedentism encouraged population growth, such growth seems to have been that of a “forced” population with a considerably di...

问题 no与and/or的搭配问题

There are _____ pens ______pencils in the box.A not, and      B no, and        C no, or1）not否定的是动词，那么pens和pencils是并列的，A选项是否可以？2）B、C选项区别在于用or还是and。这个答案应该选哪个？其他两个选项错在哪里？

问题 多个形容词并列是否用连词and

...个形容词作表语，一般要在最后两个形容词之间用连词 and 连接；多个形容词作定语，一般不会在最后两个形容词之间用连词 and 连接。但这样的例子很少见，请老师帮忙分析。比如（自己举例，不知对不对）：The boy is tall, fat an...

问题 方式状语从句的用法

They did the experiment as their chemistry teacher had instructed.这句话中的as引导方式状语从句，结尾能不能加them或to do，感觉这句话不完整，方式状语从句应该怎么用？Do it the way you were told. 这句话中结尾能不能加to do it？

问题 关于含 if 的省略

My thought at the time was that the sample had been corrupted, but if so not by my presence.but 作为连词，其后面所连接的句子是不是省略了谓语？but if so, that was not by my presence. 这样还原对不对？

问题 介词toward/to使用含有辨析?

But they're a step toward knowing who's had COVID-19.但是他们已经向知道谁感染了冠状病毒迈出了一步。请教老师：如果将上句中的toward改成介词to, 则含义有何不同?谢谢！

问题 pouring放在动词后能修饰它吗？

holiday cards addressed  to him came pouring back from the people who had never met him. 就是这句话中的pouring

问题 of whom和whose的区别

Dr.Roman, whose/of whom secretary resigned two weeks ago, has had to do all his own typing.这句话中，whose和of whom是否都可以？

问题 come to remember是什么意思

My strongest memory is not a memory. It's something I imagined, then came to remember as if it had happened.句中come to是什么意思?