Hi caryl. I have a question again. :) For example~ there is a sentene like : I read the book (Its sentence of past form) In there what I want to know is form changing in verbs. (That is also used like this : I have read the book) For me, I dont know the difference between past form of vebs and the past past(?) form of verbs exactly but thought I know a little about it and I often used to use the past past(?) form of verbs but nowdays I am confused about use of it. When are the past form of verbs used and when the past past(?) form of verbs used?? And I dont know the difference exactly.