动词_ing作主语、宾语：Seeing is believing.
动词_ing作表语:My job is teaching him English.
现在分词作定语：The people taking photos there are foreigners.
现在分词作状语：Reading English novels, he seldom looks up new words in a dictionary.
动词_ing作主语：Working with you is a pleasure.
动词_ing作宾语：I have finished writing this book.
动词_ing作表语：Our work is serving the people
现在分词作定语：The man wearing a red tie is our head
现在分词作状语：He sat in the grass, watching the sun rising