在I saw him today一句中，him一词为宾格。
In the sentence, 'I saw him today', the word 'him' is in the accusative.
在I sent her a postcard一句中，her一词处于与格。
In the sentence, 'I sent her a postcard', the word 'her' is in the dative.
在I can't drive一句中，可推测出宾语a car被省略了。
In the sentence 'I can't drive', the object 'a car' is understood.
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