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6．-Look!How long ______like this？
-Three weeks！It's not unusual here that the rain ______without stopping these days of the year．（　　）

	A．	has it been raining； pours		B．	has it rained； poured
	C．	is it raining； is pouring		D．	does it rain； pours

分析 -看！雨一直這樣下多久了？
-三周了！一年中這個時候雨像這樣下個不停在這兒很少見．

解答答案：A
題干中look表明動作正在發生，要用進行時態；答語中three weeks表示動作的持續時間，要用完成時態；句意表達持續進行，不間斷的動作，是現在完成進行時態的典型用法；第二個空表達的是客觀事實，要用一般現在時態．故選A．

點評現在完成進行時表示動作從某一時間開始，一直持續到現在，或者剛剛終止，或者可能仍然要繼續下去．

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