名师快答 名师答疑
时间：2019-04-25 03:28:54 来源：雅意学习网 本文已影响 人 
问：In reality, he is disabled and can no longer walk, but he was able to see and touch a lion while still in the convenience of the VR studio. 一句中can能否换成is able to, was able to能否换成could？
答：此句中can可以换成is able to，但was able to不能换成could。当表示“现在的能力”时，can和be able to可以互换，但此句需要改成...and is no longer able to walk；当表示“过去的能力”时，可以用could，也可以用was/were able to，但当表示“过去有能力做并且成功地做了某事”时，只能用was/were able to，相当于succeeded in doing sth.或managed to do sth.。此句意为“在现实中，他因为残疾已经不能走路，但是借助于VR工作室里设备的便利，他能看见并抚摸一头狮子。”此处说明“看见”和“抚摸”的动作已经完成。
例如：I am starving to death. I can/am able to eat two bowls of rice now. 我快饿死了，现在我能吃两碗米饭。（现在的能力）
Although badly hurt in the accident, the driver was still able to make a phone call. 尽管这位司机在事故中受伤很严重，但他还是成功地打了个电话。（过去有能力做并且做成功了）
After that, he knew he could/ was able to get through any emergency by doing what he could to the best of his ability. 那件事之后，他明白了只要尽其所能，把能力发挥到最好，他就能解决任何紧急事件。（只表示过去的能力，不强调是否已经做成）
问：Immediately, he got his things packed and went to Iceland, forcing his nephew Axel to go with him. 一句中got能否换成had，forcing能否改成forced？
答：此句中got可以换成had。当表示“让某事被做”，即“让/请某人做某事”时，既可以用have sth. done，也可以用get sth. done。但是，have sth. done还可以表示“使……遭受……”之意，而get sth. done则没有这个意思。
例如：Jenny hopes that Mr. Smith will suggest a good way to have/ get her written English improved in a short period. 詹妮希望史密斯先生会提出一个好方法，使她的书面英语水平可以在短时间内得以提高。
Peter had his house broken into while he was on holiday. 彼得在度假期间，他家被盗了。
另外，上述句中的forcing不能换成forced。因为动词force与主语he之间存在着主谓关系，在此处作谓语动词went的伴随状语，须用现在分词形式。如果换成forced，应理解成是过去分词形式，说明与主语之间存在着动宾关系，不合句意。如果将forced当成是过去式，句子则须改成：Immediately, he got his things packed, went to Iceland and forced his nephew Axel to go with him.
例如：Sarah pretended to be cheerful, saying nothing about the argument. 莎拉假装很高兴，对于争论什么话都没说。（现在分词表示主动）
The professor came into the lab, followed by his assistant and some students. 那位教授走进实验室，后面跟着他的助手和几个学生。（过去分词表示被动）
问：The acting is so convincing that it makes you believe that it is one of the best meals he has ever tasted. 一句中两个that从句分别是什么从句，that一词是否可以省略？
答：这是一个含有三个从句的复合句。第一个that从句是与前面的so搭配的结果状语从句，意为“如此……以至于……”，虽然在非正式语体中，that可以省略，但一般不省略。
例如：The weather was so cold that I didn’t like to leave my room. 天气是那么冷，以至于我都不想离开房间。
I haven’t seen Ann for so long that I’ve forgotten what she looks like. 我有很长时间没见着安了，都已经忘记她长什么样了。
第二个that引导的从句作动词believe的宾语，此处that可以省略。但当动词后面有两个或多个并列的宾语从句时，引导第一个从句的that可以省略，引导第二个和后面几个从句的that不可以省略。
例如：Having checked the doors were closed, and that all the lights were off, the boy opened the door to his bedroom. 这个男孩在检查完门都关了，所有的灯也都关了以后，才打开自己的卧室门。 He accidentally let out he had quarreled with his wife and that he hadn’t been home for a couple of weeks. 他无意中透露出他和妻子吵架了，已经好几个星期没回家了。
另外，句中he has ever tasted是一个定语从句，前面省略了关系代词that。当关系代词在定语从句中作宾语时，可以省略。
例如：Do you still remember the chicken farm （that） we visited three months ago？你还记得我们三个月前参观的那个养鸡场吗？
问：I recommend the government use this technology in the future planning of this city. 一句中use为什么不用第三人称单数？
答：这是一个含宾语从句的复合句。谓语动词recommend后面省略了连接词that，宾语从句中use前省略了情态动词should，该句补全之后为：I recommend that the government should use this technology in the future planning of this city.。
当表示推荐、坚持、建议、提议、命令、要求、愿望等动词后接宾语从句时，从句中的谓语动词应用虚拟语气结构，即“should +动词原形”, should可以省略。常见的动词有：insist（坚持）, demand（强烈要求）, require（要求）, order（命令）, propose（提议）, urge（敦促）, request （请求，要求）, command（指挥）, advise（建议）, recommend（推荐）, desire（愿望）, suggest（建议）等。为了便于记忆，可将上述单词的首字母拼在一起，连成一句话，即：I drop ur（your） cards. （我失手掉了你的卡片。）
例如：Teachers recommend parents not allow their children under 12 to ride bicycles to school for safety. 为了安全起见，老师建议家长不要让12岁以下的孩子骑自行车上学。
