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问题 A nice age to be这种结构该怎么理解

牛津必修三 Unit 1 Reading 中有这样一段话：Ah, twenty! A nice age to be. I was young once.请问这里该如何理解？

问题 aim to / aim at/ aim for有什么区别

aim to / aim at/ aim for1.想请老师讲讲,这三个词组,它们到底有什么区别? 2. 这种词组是不是整体看作是一个谓语,后面接宾语,不可以拆开?

问题 To the extent that it is genuine的结构

 Love means that I care about the welfare of the person I love. To the extent that it is genuine, my caring is not a smothering of the person or a possessive clinging. To the extent that it is genuine,请老师分析下，这是定语从句吗？怎么有关系代词that了，还有it呢...

问题 分词成分分析 keeping up to date with the latest technolo

So for a company in this situation, keeping up to date with the latest technology, even if it's only for the benefit of key staff, this can be hugely expensive. 请问老师，keeping up to date with the latest technology是什么成分

问题 关于带或不带to的不定式作宾语补足语的问题

不定式作补语，其时间性是和谓语动词同时还是将来？或者说在当谓语为过去时，不定式动作在说话时刻到底有没有发生。如，Tom had/made his son wash the car. Tom got/left/kept his son to wash the car. Tom forced/intended his son to wash the car.

问题 a 可否表示“一次”

【朗文多功能分类词典】的一个例句：There was a gas leak and it caused a fire. 煤气漏出，引起了一场火灾。请教专家：句中 a gas 中的a指出的是“一次”吗，谢谢！

问题 round在句子中的成分

Alice got up and carried the pate round.round 是作定语，还是副词用状语？

问题 relaxed, relaxing 的区别

You will improve your English in our activities in a relaxed and comfortable way.这句话里的形容词relaxed能不能使用relaxing 呢？

问题 句子省略补充

Bejing's climate is more or less unfit for the growing of flowers. Freezing in winter, windy in spring, and either too dry or too often plagued by a sudden frost.老师好，后面几个形容词是省略了什么？

问题 be动词省略问题

Many large rivers were straightened and their beds deepened.后面那一句是不是省略了were，完整是说成their beds were deepened吗？如果是省略were，那为什么可以省略呢？

问题 垃圾的不同表示

In Japan, there is a fixed time for the sorting of each kind of garbage and littering.问：此句中我觉的用一个garbage就行了，为什么后面还要用littering？都是名词垃圾的意思，有什么区别吗？

问题 这是不是垂悬分词

Speaking in the middle of the altar, one's voice will sound particularly loud and clear.请问此句前面部分是算作垂悬分词吗？

问题 the first Chinese后接to walk还是walking

Zhai Zhigang has become the first Chinese _____ in space.  A. walking   B. to walk 答案为 B。请问原因。谢谢！！

问题 for sb to do sth 中的 for 能省略吗

All I ever wanted was for Juli Baker to leave me alone.请问怎样划分句子成份？for能省略吗？

问题 不定式的省略问题（but she ought to be）

She hasn't been promoted, but she ought to have/be.请问这两个都对，还是只能填哪一个？