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war. 自從戰(zhàn)爭以來發(fā)生了許多變化。 作連詞 , 引導時間狀語從句 , 從句一般用一般 過去時 。例如 : We have been friends since we came here. 自從我們來這里我們就已經(jīng)是朋友了。 【 活學活用 】 ① — have you stayed in New York? — For about two weeks. A. How soon B. How often C. How long D. How far ② I have had the bike I was 15 years old. A. for B. since C. in D. on Ⅰ . 用所給詞的適當形式填空 1. Mr. Brown is the (make) of the food. 2. My father (work) in the middle school for twenty years. 3. These (scarf) are Ann’s and Alice’s. 4. Ann has had the sweater since she (be) five years old. 5. I