I have been living in the United States for twenty years,but seldom＿＿＿＿so lonely as now.A.have I felt B.I had left C.I have left D.had I leftDespite what I'd been told about the local people's attitude to strangers,at no time＿＿＿＿A .I

I have been living in the United States for twenty years,but seldom＿＿＿＿so lonely as now.A.have I felt B.I had left C.I have left D.had I leftDespite what I'd been told about the local people's attitude to strangers,at no time＿＿＿＿A .I
I have been living in the United States for twenty years,but seldom＿＿＿＿so lonely as now.
A.have I felt B.I had left C.I have left D.had I left
Despite what I'd been told about the local people's attitude to strangers,at no time＿＿＿＿
A .I had met B.I met C.have I met D.did I meet

I have been living in the United States for twenty years,but seldom＿＿＿＿so lonely as now.A.have I felt B.I had left C.I have left D.had I leftDespite what I'd been told about the local people's attitude to strangers,at no time＿＿＿＿A .I
1.A seldom否定副词后用倒装句式,根据句意以及前后时态一致性选A
2.D at no time 否定短语道理同上,前后均用表示过去的时态选D

现在完成时

I have been living in the United States for twenty years, but seldom＿A＿＿＿so lonely as now.
A.have I felt B.I had left C.I have left D.had I left
1.首先seldom置于句首，表否定，后面要倒装，排除B C...

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I have been living in the United States for twenty years, but seldom＿A＿＿＿so lonely as now.
A.have I felt B.I had left C.I have left D.had I left
1.首先seldom置于句首，表否定，后面要倒装，排除B C,其次后半句意思是 我从没有像现在这样感到孤独。是从过去到现在，用现在完成时，所以选A, 过去完成时是从过去的过去到过去，所以不选D。
Despite what I'd been told about the local people's attitude to strangers, at no time＿＿C＿＿
A .I had met B.I met C.have I met D.did I meet
1.首先at no time置于句首，表否定，后面要倒装，排除A B ,at no time 表示 从不，从没有。后半句表示，但是我从没有见过。是从过去到现在，用现在完成时，所以选C.

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1. A.have I felt : 以否定词( seldom)开头的句子,要用倒装句, 20年间从未感到像现在这样孤独,因此应用现在完成时态.
2.D.did I meet: at no time是否意义的短语放在句首,要用倒装句, 遭遇当地人对待我的不好的态度是过去发生的事,故要用一般过去时.

第一题选A，seldom否定副词后用倒装句式。
但是，我觉得第二道选C，在倒装的同时，还要看时态。这句话，翻译，尽管我已经被告诉了这里当地人对陌生人的态度，但现在我还没有遇到。应该用现在完成时，不是过去时。
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