过去式,I was playing .+ING就不是动词了

过去式,I was playing .+ING就不是动词了 i was played 和 i was playing 有什么不同?人家说was后面可以加动词过去式的，构成被动什么来着？我好纳闷，有这东西么？ 那 I 也是过去式用 was 请问while引导的从句是跟过去式还是过去进行时比如while I was playing computer game,he ————是写he came ,还是写 he was coming. was playing是过去式还是将来,如果是过为何是加ing而不是加ed? I saw that he was playing football同义句 分析下he sat watching tv 这句话.请问这个是什么时态?过去进行时是 he was watching tv ,这个主语+动词过去式+过去分词 请分析下.i heard him playing the piano I was playing the guitar at this time yesterday 对 playing the guitar 提问 The class ------football while I was going over their compositionsA.is playing B.plays C.are playing D.were playing when i was a t__,i was good at playing the piano I was playing the piano when I was reading nespaper.这里到底用when还是while. i was cooking 为什么用was was 不是 是过去式吗 I _______ football when I was young.A used to play B used to playing C used to be playing I _______ football when I was young.A used to playing B used to play C used to be playing i was playing the piano 和i am playing the piano 第一句成立吗 第二句呢 I was thin when I was a child.这句过去式有错吗? It was a bright afternoon.I was playing games on the computir...30业阅读理解 My mind was playing