为什么用reading不用readi haven't finished reading the book yet.这里为什么用reading而不直接用read?到底什么时候加ING?

为什么用reading不用readi haven't finished reading the book yet.这里为什么用reading而不直接用read?到底什么时候加ING? all the poeple in the whole family like reading.readi 用like 还是likes improve my reading skills中的reading做什么成分?为什么用reading而不用read? his father is sitting at the desk,reading a story-book.中为什么用reading 不用is reading 或 read Did you go shopping with your parents?为什么shopping不用原形?Do you think everyone enjoys their weekend?为什么enjoys不用原形?He likes reading book.---Does he like reading book?为什么reading不用原型?问题是不是疑问句用动 in the reading room为什么用reading 为什么do some reading用加ing的形式而do some sports不用 I think reading could enlarge my knowledge.为什么用 could 而不用can She'll do some reading.(对some reading提问）What will she does?对吗?为什么?为什么不用does 而要用do 呢 While Peggy ___,her brother is playing records.A.reads B.is reading C.has read D has been readi 这里为什么要用动词不定式?After reading the letter,he went on (to write)a reply.为什么不用writing? that is one of those books that( ) worth reading.的括号中为什么用are而不用is? she often does some reading为什么用reading he finished reading the dook last night 为什么用reading I know you like reading books.为什么用reading my sister likes reading books sfter school.为什么用reading Lily finished reading the book yesterday.为什么要用reading The girl often reading books after school 为什么用reading