此句中,to your parents不作賓語補足語,因為,不能形成I(me的主格) am to your parents的邏輯關系。試對比選修9第104頁的下邊緊跟著的第2個例句:His speech left the president in a very difficult position.(能夠形成the president was in a very difficult position的邏輯關系,所以此處的介詞短語作賓語補足語。)。
賓語補足語按照來源分為兩大類:
①名詞/形容詞/副詞/介詞短語,作賓語補足語。這些賓補是由“(主)系表”轉換來的。如,I am happy.(主語+系動詞+表語)→He makes me happy.(主語+謂語+賓語+賓補)(轉換過程分析:隨著“主語I→賓語me”,“表語(也叫主語補足語)happy→賓語補足語happy”。省略無意義的am。)
②非謂語動詞短語,作賓語補足語。這些賓補是由“(主)謂賓”轉換來的。如,Lucy asked him to turn down the radio.(不定式短語作賓補)(轉換過程分析:主語變為賓語,把動詞短語變為非謂語動詞短語。(he) turned down the radio→(him) to turn down the radio)
(由于篇幅所限,不能把各種情況都舉例。詳見筆者高偉《魔方英語語法》,每種情況都有相應例句和分析。) |