作者：郭克晴
1. Learning a new language is fun.学一种新语言是件趣事。
动词不能直接作主语,因此在这里要用其动名词形式,而且其谓语动词应用单数形式。如:
Doing morning exercises is good for our health. 做早操对我们的健康有益。
2. I don't know how to make a sentence in English. 我不知道如何用英语造句。
本句是个简单句,其中的how to make a sentence 是"疑问词+动词不定式"结构,在句中作谓语动词know的宾语,make的逻辑主语就是I。除how外,what, which, when, where, who等疑问词都可用于这种结构,这种结构除了作宾语外,还可作主语或表语等。
I don't know what to do. (= I don't know what I should do.) 我不知道该做什么。
What to do next is a question.下一步做什么是个问题。(作主语)
The problem is when to start. 问题是什么时候动身。(作表语)
3. I hope you will write to me soon. 我希望你会很快写信给我。
write to sb. 和write a letter to sb.都意为"写信给某人",而hear from sb.和receive/get a letter from sb.意为"收到某人的来信"。
I heard from my pen pals yesterday. (=I received/got a letter from my pen pals yesterday.) 昨天我收到了我的笔友们的来信。