have sth done / to do / doing，请问这三者有什么区别呢？比如：
He soon had them all laughing. 他很快让他们都笑了起来。
I have a car waiting for me. 我让一部车在等我。
请问这里的 doing 可以用 do 替换吗？
It's not always easy for nurses to distance themselves emotionally. 对护士来说，使自己不动感情并非总是很容易。distance vt. 拉开距离；与…疏远句中，themselves就是指nurses，如何理解句意呢？还有副词emotionally修饰谓语distance, 如何理解并翻...
...we have not made any arrangement for our picnic. A. So far B. Up to now C. Thus far D. As yet为什么这题不选A呢？我们老师给的解释是在否定句和疑问句中通常用(as) yet，但我觉得说服力不够呀。平时so far也在否定句中看到过呀?
-Good evening. I _____to see
Miss Jessic.-Oh! Good evening. I'm
sorry, but she is not in.A. came B. come
C. have come D. had come给出的答案是have come，为什么会用现在完成时呢？自己做题的时候就只能排除一个had come。came和come又该怎么排除呢？
...是1988年的一道全国卷高考题：
Nobody noticed the thief slip into the house because the lights happened to _______.
A. put out B. turn out C. give out D. go out
答案是D。但我觉得D也不对，...
...that the more haste the less speed.The teacher told me that the more haste and the less speed.哪句对？2. 据说吃得越多身体就越胖。It is said that the more you eat, the fatter you get. It is said that the more you eat the fatter you get. It is said that the more you eat and the fatter ...
The prolonged connection with France retained by its new rules and landlords made a deep impression on the English language.
在made前面加个that有什么区别？
一个句子有两个动词以上就是非谓语？
一个不算？
... , said: “Worldwide new species of frogs are being discovered and described quite regularity.请问老师，这个句子里said前面为什么要加逗号? 去掉可以吗？不明白这个逗号在这里的用法，或者说，这个句子成分的顺序还可以写成什么样，谢...