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are in the room.The dog is small. It is Tom39。B) 人稱代詞的主格形式在在句中作主語和表語。如:I saw him at the party(賓語).I haven39。形容詞性物主代詞在句中只用作定語,相當于一個形容詞,不能單獨使用;名詞性物主代詞則不能用作定語,相當于一個名詞詞組,可以單獨使用,在句中用作主語、賓語、表語、和介詞of連用。c. 作介詞賓語I am writing with your pen, not with mine.d. 作表語如:My life is yours. It39。s yours. 我的生命屬于你,屬于你,屬于你。如: my new bike 我的新自行車 her young son 她年幼的兒子B) 形容詞性物主代詞所修飾的名詞可以是單數(shù),也可以是復數(shù)。如:這是我的鋼筆.[誤]This pen is my.[正]This is my pen.D) 當名詞前有形容詞性物主代詞修飾時,不能再用冠詞a, an或the來修飾名詞。如:他們的電腦在這兒。它總是單獨出現(xiàn)在句中。 如:My bag is yellow, her bag is red, his bag is blue and your bag is pink. 為避免重復使用bag,可寫成My bag is yellow, hers is red, his is blue and yours is pink. C) 名詞性的物主代詞在用法上相當于省略了中心名詞的 39。s cap 意為 The cap is Jack39。E) 有時同一個結(jié)構(gòu)用不用物主代詞會導致含義的變化。五、反身代詞的用法1)定義:如人稱代詞一致,反身代詞的人稱和數(shù)以及性要和它所指代的名詞或代詞一致。用作同位語時,主要用于加強被修飾詞的語氣,可緊放在被修飾名詞后或句末。t blame you, I blame myself(賓語).He cut himself when he was cooking.(賓語)That poor boy was myself.(表語)那個可憐的孩子就是我自己。如:I39。He doesn39。 六、相互代詞的用法英語的相互代詞只有each other和one another,它們在句中通常只用作賓語。We have known each other for many years. 我們認識許多年了。如:They often stay in one another39。另外,有人認為 each other用于兩者,one another用于三者,但在現(xiàn)代英語中它們??蓳Q用(即均可用于兩者或三者)。它們在句中可作主語、賓語、表語、定語等。如:The playground of this school is bigger than that of that school.(that=the playground)My seat is next to that of the mayor. 我的座位在市長座位旁邊。八、疑問代詞的用法1. 疑問代詞即指who, whom, whose, which, what等用于引出特殊疑問句的代詞。如:What did she say? 她怎么說?Which are our seats? 哪些是我們的座位?What are you worrying about? 你為什么事煩惱?2. what與 which的用法區(qū)別:當選擇的范圍較明確時,用 which;當選擇的范圍不明確時,用 what。2) 種類英語中不定代詞有:some(something,somebody,someone,somewhere),any(anything,anybody,anyone,anywhere), no(nothing,nobody,no one), every(everything,everybody,everyone,everywhere),all,each,both,much,many,(a)little,(a)few,other(s),another,none,one,either, neither等。 Either(of t