全析提示: 1)动名词作表语和主语是等值关系,两 者有时可以互换,句子意思不变;动 名词后面可以接宾语、状语。 His job is raising pigs. = Raising pigs is his job. 2)现在分词作表语和主语不是对等关系, 现在分词后面不能接宾语,但它前面 可以有修饰性的副词very, rather等 The book is (very) interesting.