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问题 cause用法疑惑

...misfortune you can suffer is one that you caused yourself, especially when it hurts those close to you.请问老师：定语从句you caused yourself中，结构是 you caused one (the worst misfortune) yourself，还是 you caused yourself one (the worst misfortune)？或者两种分析都可以？...

问题 句子成分

We need principals from all stakeholder groups in Davos to summon the imagination and commitment necessary to tackle the problem.请问 necessary to tackle the problem 作什么成分？

问题 mean用法疑问

 I believe god meant marriage for men and women.单词mean似乎有很多意思，我觉得原意“意思是”可以填进去，但是为什么要用meant呢

问题 to的用法疑问

您好，请问这句：Some pets are abandoned by their owners to and ... 其中 to 属于什么结构？去掉to呢？

问题 yet的用法

When and where to build the new factory is not decided yet. 请问句中有yet为什么不能用has not decided呢？

问题 主动表被动

请教老师们：Jonda struck again with all her might and this time ，mercifully，the window broke into little pieces中为什么broke不用was broke呢？ 先谢谢老师们回答！

问题 not的用法

Texan frackers respond to price signals and the profit motive, not government quotas.我想问一下not不是副词吗？为什么能直接否定一个名词呢？

问题 believing that

they have the incentive to develop and maintain healthy habits believing that these habits can bring enjoyment to their lives。请问这是什么句子，

问题 句子结构分析

The winding course of the stream continually shut out scene behind us and revealed as calm lovely a one before. 这里as后面没咋看懂，老师能不能分析下？谢谢！

问题 谓语动词的数量

请问老师，He sang and danced in the lawn. 这句话的sang和danced是两个谓语动词还是算作一个整体？一句话只有一个谓语动词的说法是否正确？

问题 英语句子改错

献上改错题一道，与大家分享:Ha Jin is an eminent Chinese-American writer noted for both his novels and even poetry. 此句中有一处错误请改正。谢谢！（难度系数：一般）

问题 since做副词

Weaver has since died of a heart attack, and the case remains open.此处的since是不是单纯作为副词，表示类似于“那会已经”的意思？

问题 翻译问题

And our efforts to achieve these goals hold out great potentials for development.问：这句中hold out 是啥意思啊？我查字典(朗文)1.抱有希望2.维持3.守住4.坚持，可放进去都不通啊，那倒底此短语还有什么意思？

问题 句子正误判断（涉及时态）

When I turned off the lights in the office, I locked the door and left.这个句子对吗？

问题 逗号句

1. One has buttons and the other hasn't.2. Some people enjoy exercise, others don't.以上两句来自语法书，两句结构一样，为何第二句话的两句之间用了逗号？不是应该用连词吗？谢谢老师。