指出下列句中主語的中心詞

1.The teacher with two of his students is walking into the classroom.

2.There is an old man coming here.

3.The useful dictionary was given by my mother last year.

1.teacher 2.man 3.dictionary 【解析】 1.句意：老師和他的兩個學生正在走進教室。with two of his students是介詞詞組，作伴隨狀語；The teacher是主語；is walking into是謂語動詞，做謂語； the classroom是句子賓語。此句也可這樣表達：The teacher is walking into ...
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