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问题 不及物动词say为什么可以接宾语从句

例如：She said that she was reading.

问题 that引导表语从句可以省略吗

One reason could be poor children do not get the food they need for healthy development. 句中为什么没有that，that引导表语从句不是不能省略吗？谢谢老师！

问题 the best可以引导从句吗

My parents were struggling even before COVID, I’m helping out the best I can.请问the best I can是什么从句，是不是前面省略了as或者什么成分？

问题 unless 可以引导虚拟语气吗

老师您好，我遇到了一个句子：These ships would have had to return empty, unless their captains were able to pick up a return cargo. 这里主句是一个虚拟语气，为什么unless引导的从句不用虚拟语气呢？

问题 主系表结构后面可以直接跟名词吗

Some things are worth the wait.这句话属于主系表结构吗主系表结构后面直接加个名词？

问题 可以在have sth done 后加上by短语吗

...下面这句：We had the machine repaired. 我们请人修理了机器。可以这样改一下吗？We had the machine repaired by Mr Wang. 我们请王先生修理了机器。我的意思是：在have sth done 结构后可以加上 by 短语来说明动作的执行者吗？即具体指明是某人...

问题 but和however可以用在同一个句子中吗

They can appear as a red tide in the daytime but when disturbed at night, however, they glow bright blue.这个句子既出现了but，也出现了however。它们可以同时出现在同一个句子中吗？请老师解答一下，谢谢！

问题 为什么whether可以引导同位语从句而if 不能

I have small doubt whether he is suitable for the job.He hasn't made the decision whether he will go there.为什么在同位语从句中，whether可以引导同位语，而if 不能引导同位语？

问题 虚拟语气 与将来事实不符，为什么 if从句可以用should do或were to do

...f it rains, 改成虚拟语气后，退一个时态，变成If it rained…可以理解。但为什么，还可以变成 should rain和were to rain呢？原句子 If it rains…为什么可以改成 If it should rain 和If it were to rain…?

问题 well可以换成good吗？

It is well also if they enable us to look upon our fellows,even the most eminent and respectable,with humor,and if they lead us to take ourselves not too seriously.

问题 一个句子可以有两个谓语吗

A history of long and effortless success can be a dreadful handicap, but, if properly handled, it may become a driving force. 这样一个句子不是有两个谓语了吗，can be 和 may become？

问题 until midnight可以用定语吗

After dinner, the hours until midnight go slowly by.这是译林版高中英语新教材必修二第1单元的一个句子(p2)。老师说这里的 until midnight 是定语，但 until 不是表示时间的吗？

问题 现在分词可以作谓语吗

But when he looked to the side, he saw instantly that it wasn’t a dog at all, but a wolf, quickly catching up with him.这个句子中的catching作什么成分？是作谓语吗？注意连词but后面没有谓语动词啊！

问题 应该否定前移的情况也可以不前移吗

人教版8年级上册101页有一句话:I think kids won't go to school.此处为什么不否定前移？

问题 in (during, for) the past (last) few years中的介词可以省略

...一是它们通常与现在完成时连用；二是其中的介词 in 也可以换成 during / for，即说成during the past (last) few years, for the past (last) few years。我的疑问是：这类用法中的介词 in, during, for 可以省略吗？谢谢！