2．How time flies!Several years_____since we started our middle school life．We will keep the pleasant experiences in our minds．（　�。�
A．have passB．has passedC．will pass

分析 時間過得真快！自從我們開始中學生活以來，已經(jīng)過去好幾年了．我們將在心中保留愉快的經(jīng)歷．

解答 答案：B  1．since引導時間狀語從句時，從句使用一般過去時，則主句使用現(xiàn)在完成時.2．主謂一致有一個相關的語法規(guī)定如下：如果表示時間、數(shù)目、距離、價格、重量等名詞復數(shù)做句子主語，且視為一個整體看待時，則謂語動詞使用單數(shù)形式．根據(jù)時間狀語since we started our middle school life．可知應該用現(xiàn)在完成時，現(xiàn)在完成時態(tài)構(gòu)成：助動詞have/has+過去分詞．Several years看做一個整體，應該用單數(shù)，has，故選：B．

點評 本題主要考查動詞時態(tài)，做此類題目一定注意時間狀語，注意句子所表達的含義，才能更好地判斷．同時更應記清時態(tài)的構(gòu)成形式．就本題而言，主要考查現(xiàn)在完成時態(tài)．

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