must, may , might, could, may , can't表示推测含义,后面都接动词原形
都可以表示对现在情况的揣测和推断,但他们含义有所不同
must 一定,肯定 (100%的可能性)may, might, could 有可能,也许 (20%-80%的可能性)
can't 不可能,不会 (可能性几乎为零)own v. - owner n.listen v. - listener n.learn v. - learner n.
whose:谁的,是个疑问词,作定语,后面接名词如:---Whose book is this? ---This is Lily's.
当play 指弹奏西洋乐器时,常在乐器前用定冠词theplay the guitar;play the piano;play the violin
当play 指进行球类运动时,则不用定冠词play football;play basketball;play baseball