during the last decade of the 19th century 与什么时态连用?Millions of immigrates------ in Europe during the last decade of the 19th century A.has arrived B.had arrived C.arrived选哪个,为什么?

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during the last decade of the 19th century 与什么时态连用?Millions of immigrates------ in Europe during the last decade of the 19th century A.has arrived B.had arrived C.arrived选哪个,为什么?

during the last decade of the 19th century 与什么时态连用?Millions of immigrates------ in Europe during the last decade of the 19th century A.has arrived B.had arrived C.arrived选哪个,为什么?
during the last decade of the 19th century 与什么时态连用?
Millions of immigrates------ in Europe during the last decade of the 19th century
A.has arrived B.had arrived C.arrived
选哪个,为什么?

during the last decade of the 19th century 与什么时态连用?Millions of immigrates------ in Europe during the last decade of the 19th century A.has arrived B.had arrived C.arrived选哪个,为什么?
必须C啊.A是现在完成时表示过去到现在一直在做的.题中明显看出只是局限在19世纪,没有涉及现在,也没有强调对现在造成了影响.B过去完成时当然也不可能,没有出现过去的过去,只有19 世纪一个时间点.
其实现在完成时和过去时是很容易混的,只要坚持记住现在完成时是“过去加现在”,一定要感受到两个要素才可以选他

C。因为后面有具体时间

我的理解，绝不权威。
B.
19th century 是过去的时间，during表在持续的一段时间，一般用完成时态，所以用过去完成时。
如用 A， 后边时间应该是since the last decade of the 19th century
如用 C, 后边时间应该是 in the last decade of the 19th century

C. 过去式

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