They consider Tom Cruise one of the most famous and best _actors__(act) 怎么做（寫(xiě)理由）他們認(rèn)為T(mén)om Cruise 是最著名的,最優(yōu)秀的演員之一.most famous and best作為形容詞修飾后面的名詞,所以act要寫(xiě)成actor表...xieunless 除非,如果不 (= if…not) 　　I shall go tomorrow unless it rains. 　　------Shall Tom go and play football? 　　------Not unless he has finished his homework. 　ifconj. （表?xiàng)l件）如果；即使；是否；（表假設(shè)）假如n. 條件；設(shè)想例句If there was any disappointment it was probably temporary.即使有任何遺憾，可能也是暫時(shí)的sometime在某一時(shí)候Why don't you come and see me sometime.你何不在某個(gè)時(shí)間來(lái)看看我？some time一段時(shí)間；一些時(shí)間；經(jīng)過(guò)若干時(shí)間 let's pretend that you are speaking with a friend who had been studying for a test for some time.我們假設(shè)你跟一位朋友在聊天，他已經(jīng)為一門(mén)考試復(fù)習(xí)了好一段時(shí)間。sometimesadv. 有時(shí)，間或Sometimes I think he dislikes me.有時(shí)我覺(jué)得他不喜歡我。some times 好幾次I have found some times 希望可以幫到你