Englishgrammar:HavinglivedinChina4decades,whythebeggningishavingi/oHave完整的句子很简单啊，如HavinglivedinChina4dacedes,Iwanttoleavethiscountry.我想请问这个句子适合于什么语法，为什么省略了I

Question

English grammar: Having lived in China 4 decades, why the beggning is having i/o Have
完整的句子很简单啊，如 Having lived in China 4 dacedes, I want to leave this country.
我想请问这个句子适合于什么语法，为什么省略了 I, HAVE 就变成了HAVING

Answer 1

这是表示一直持续发生的伴随情况的现在分词,属于非谓语动词的一种,在句中充当原因状语.主语在后面,伴随动作也是由主语实施的.
如：Having lived in China 4 decades,Jonn can speak Chinese so fluently that none of us is able to tell him apart from a native speaker.约翰已在中国生活了四十载,中文说得非常溜,没人听得出他是外国人.