1.if you _______more about giving first aid,you______us had
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1.if you _______more about giving first aid,you______us had known,could have helped
2.Never _____such an animal as Jim described after his coming back from the New Zealand.
have i heard 还是 did i hear,还是had i heard
问:1中had known是根据could have helped 往前推一个时态得出来的.
那么在2中,是不是也可以用这种方法,把described往前推一个时态,得出 had i heard..为什么?
2.Never _____such an animal as Jim described after his coming back from the New Zealand.
have i heard 还是 did i hear,还是had i heard
问:1中had known是根据could have helped 往前推一个时态得出来的.
那么在2中,是不是也可以用这种方法,把described往前推一个时态,得出 had i heard..为什么?
是的 因为过去完成时态就是过去式之前的事件发生的动作
只要是一个动作发生在过去那个动作之前 那个在前面的动作就可以用过去完成时态哈
只要是一个动作发生在过去那个动作之前 那个在前面的动作就可以用过去完成时态哈
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