1> The two collectors have determined to buy the precious Eg

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1> The two collectors have determined to buy the precious Egypian vase,_____.
A.however much it costs
B.no matter how it costs
C.however much does it costs
D.no matter how much does it costs
[我选的是D,为什么?这一题的考点在哪里?怎么区别开来?]
2> —What made little Tony so unhappy and cry in his room?
－_____to go hiking with his brother.
A.Having not been allowed
B.Not having allowed
C.Having not allowed
D.Not having been allowed
[我选的是A,这一题主要是要考查什么?怎么区分这几种形式的不同?]

第一个是考察however引导让步壮语从句
however相当于no matter how(用法区别跟whatever和no matter what这类词一样)
形容词要提到however或on matter how之后然后接句子如此句的it costs
第二个答句有省略因为用what提问问的主语
所以完整的回答应该是Not having been allowed made little Tony so unhappy and cry in his room.
这样一来句子结构就清楚了 Not having been allowed用来做主语
分词的not放在分词之前
根据句子的意思应该用被动 "不被允许去...使得Tony..."
所以选D

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