问题 with 短语的作用

Comparisons of individuals of known age with these standards make it possible to identify deviations from the “normal”growth trajectory.with these standards 是否是后置定语？

问题 不定式作宾语补足语？

The dinner is ready to eat.这句话的不定式是做宾语补足语吗？可是没有宾语只有表语啊？

问题 until等于before吗

It's just 200 days now until the postponed Tokyo Olympics are set to kick off.这里的until如何理解呢？等于before吗？ 

问题 这个句子时态对嘛(应该怎么改)

He studies hard and he was able to pass the exam.

问题 unit sales 是什么意思

The sales managers have been asked to report on last month’s drop in unit sales.

问题 "换钱" 用change for /change to /exchange to

...for poundschange a $10 bills for two fivesThe new government enacted a law to change to a new bill. 请问,  这几个搭配有什么区别呢?   字面上都是把一种钱换成另一种钱??此外还想问下老师, change sth to/for sth  两个sth是同类事物时候(比如...

话题 to be held和to hold的区别

话题 fail to to do sth句子成分

问题 shift可以加双宾语

FEMALE PROFESSOR: Now, migration’s a natural survival strategy.Over the past two million years, colder glacial periods have alternated with warmer interglacial periods.FEMALE PROFESSOR: And so…um, in-in response to these gradual climatic swings, some species have shifted their ranges h...

问题 China government 和 Chinese government 究竟有什么区别

The tomb of Emperor Qin Shihuang was constructed more than 2000 years ago and has never been opened.This is because archeologists, as welll as the Chinese government, want to protect what lies inside it.This is because...中的This指代了什么？为什么不是China government, China government ...

问题 vacation, holiday 和 leave 表示“假期”的区别是什么

各位老师好！有这样一道选择题：The worker asked for _____ to see a doctor, and the boss gave him two days _____. A. vacation, off B. leave, off C. holiday, leave D. off, leave我认为应该选择C，但是答案是 B。请问，vacation, holiday 和 leave 不是都可以表示“假...

问题 when,while,as从属连词的选择

The snow was getting deeper and deeper when/while/as we waited for the train to arrive.看到一道题，答案是while或as，不可用when。可是《新编英语语法教程》说主句和从句如果都表示持续性动作，并且同时发生，持续时间大致相等，前后都用一般过...

问题 “有do无to”和“无do有to”具体能请老师解释一下吗

“有do无to”和“无do有to”具体能请老师解释一下吗？尤其是“无do有to”是什么情况下这样用呢？

问题 be determined to do 与 determine to do sth 区别

怎么理解以下论述：be determined to do 表示状态determine to do sth 表示动作谢谢。

问题 mean to可以省略to吗

Asset allocation means spread your funds over various types of assets.老师好，请问这里的spread用的是否正确？