carloscn
commented
5 months ago it 形式主语
在英语中，“it”经常被用作形式主语，而“so...that”和“so that”则用来表达结果和目的。下面我将详细解释这些用法。
It 作形式主语
在英语中，当句子的真正主语是不定式、动名词或从句时，为了避免句子开头直接出现这些较为复杂的元素，通常使用“it”作为形式主语，将真正的主语移到句子的其他部分。
不定式作主语
- 示例：To learn English well is important.
- 改为使用形式主语：It is important to learn English well.
动名词作主语
- 示例：Reading extensively improves your vocabulary.
- 改为使用形式主语：It improves your vocabulary to read extensively.
从句作主语
- 示例：That he passed the exam surprises everyone.
- 改为使用形式主语：It surprises everyone that he passed the exam.
Reward for Virtue
My friend, Hung, has always been fat, but things got so bad recently that he decided to go on a diet.
He began his diet a week ago.
First of all, he wrote out a long list of all the foods which were forbidden.
The list included most of the tings Hugh lvoes: butter, potatoes, rice, beer, milk, chocolate, and sweets.
Yesterday I paid him a visit, I rang the bell and was not surprised to see that Hugh was still as fat as ever.
He led me into his room and hurriedly hid a large parcel under his desk.
It was obvious that he was very embarrassed.
When I asked him what he was doing, he smiled guiltily and then put hte parcel on the desk.
He explained that his diet was so strict that he had to reward himself occasionally.
Then he showed me the contents of the parcel.
It contained five large bars of chocolate and three bags of sweets!