Question

________ my hometown was a poor and backward area, but great changes ________.

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A．In the past, took place in the past years

B．In the past few years, have taken place in the past

C．In the past twenty years, took place in the past

D．In the past, have taken place in the past twenty years

Answer 1

答案：D
解析：

【巧解導(dǎo)析】前一分句說明過去的客觀情況，時態(tài)用過去時，故排除B，C項．but后的分句強調(diào)在過去的幾年中家鄉(xiāng)發(fā)生的變化，應(yīng)用現(xiàn)在完成時態(tài)，故排除A項．

提示：

【巧解點悟】in the past通常與過去時連用，而in/during/over the past＋一段時間常與現(xiàn)在完成時連用．