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问题 to do不定式的一个用法

老师你们好，我想请问一下to do不定式在这里的用法But a defence does not have to be perfect to be useful.后面to be useful是做什么成分呀？

问题 这个独立主格句子中是否缺少宾语

Not far from the school there was a garden, its owner seated in it playing chess with his grandson every afternoon.its owner…为独立主格，但因为seat是及物动词，所以它后边缺少宾语吗？这里边存在seated修饰its owner的情况吗？

文章 高中英语新课标词汇-教学参考资料-addicted

...ed to cocaine. 他承认他吸食可卡因上瘾了。50 million Americans are addicted to nicotine. 五千万美国人有烟瘾。Marvin soon became addicted to sleeping pills. 马文很快便对安眠药上瘾了。He was addicted to wine and French brandy. 他有喝葡萄酒和法国白兰地的...

问题 此处being的用法是独立主格吗

Though they rarely thrive in tropical conditions, they can be grown on the sides of taller hills and mountains there.虽然它们在热带环境中极少长得很茂盛，但在热带地方较高的山坡和高山旁还是能够生长。Several species of wildlife forage for berries, the largest of ...

问题 介词from后为什么不是被动形式

...licans and Democrats generally agree that the stimulus is needed. But they've had some disagreements over what exactly the money should be spent on and how it should be given out and that's delayed the bill from passing. from是介词，防止的意思，那么为什么不是...

问题 there be结构

--There were only ten minutes remaining. Please hurry up.--I'm coming. 这里为什么是There were,而不是there are,  下面的人用的是现在时。为什么用Remaining不用remain?

问题 than在句子中是介词还是连词

I am not taller than he.——than 是介词吗？The status of subordinates is lower than their superior.——than 是介词吗？I run faster than he.——这个 than 是连词吗？

问题 频度副词可以用于强调句被强调吗

请看下面这个句子：It is not often that he comes late.我有两个疑问：1. 这是强调句吗？还是often是表语，后面的that从句为主语从句？2. 除了often外，其他的频度副词也可以这样用吗？

问题 should 虚拟语气 倒装句用法

He tells her not to expect him certainly by the return coach, nor to be alarmed should he remain gone three or four days.should he remain gone three or four days 这是是倒装句式吗，为什么在这里用倒装?

问题 用分词或不定式有什么区别

He tried treating the patient with a new medicine.I regret not having taken the job.尝试，懊悔这类词，后面用分词和用不定式有什么区别？   （治疗病人，得到工作 不应该用不定式更合适吗？）

问题 定语从句关系词的选择

Which of the following words can NOT be used to complete "This is the place ______ I visited"？A．/B．whereC．whichD．that 答案是B。但是我觉得A也可以，因为visit既是及物动词也是不及物动词，因此不需要谁来做他的宾语。请老师指点。

问题 句子分析

...如果不用强调的手段，这个表语从句应为that the unreality, not the violence is doing harm to children.那么原句中的but the unreality that里that是定从引导词吗？

问题 as … as比较对象的疑惑

Most kids today do not do as many household chores as before.麻烦老师分析一下1 这里是before和today两个副词进行比较吗？2 或者是省略了，the kids before和Most kids today进行比较？3 today是时间副词做后置定语修饰most kids吗？

问题 肯定句中any...at all如何理解

Any offer at all would be better than this.我知道否定句中 not any...at all 的意思，但如果是肯定句呢？这个 at all 如何理解？

问题 几个时态题

...___ (have) eight lessons this term.   这道题我一开始填的are having，将have理解成“上（课）”采用的是现在进行时“现阶段正在进行的事儿，说话时不一定发生”。   后来觉得have是静态动词表状态，理解成“有”，采用...