---Such a mistake could have been avoided．---Unfortunately.he the mistake again and again．( )A．repeatedB．would repeatC．had repeatedD．would have repeated 题目和参考答案——青夏教育精英家教网——

题目内容

19．---Such a mistake could have been avoided．
---Unfortunately，he the mistake again and again．（　　）

	A．	repeated		B．	would repeat
	C．	had repeated		D．	would have repeated

分析 ---这样的错误本来是可以避免的．---不幸的是，他一再的犯这种错误．

解答答案：A 句中"could have been avoided"表示过去本来可以避免（而实际上并没有避免的事情），所以答语也应该是指他在过去一再犯错误，所以用一般过去时，即repeated．故选A

点评做时态题时，找句中的时间状语很关键．但有时句中并没有明显的时间状语时，所以要学会捕捉句中的信息，例如本题中的固定表达"could have done"表示过去本来可以做…，从而提示了本句要使用一般过去时．

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10．The National Gallery
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3．Monthly Talks at London Canal Museum
Our monthly talks start at 19：30on the first Thursday of each month except August．Admission is at normal charges and you don't need to book．They end around 21：00．
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The Canal Pioneers，by Chris Lewis．James Brindley is recognized as one of the leading early canal engineers．He was also a major player in training others in the art of nanal planning and building．Chris Lewis will explain how Brindley made such a positive contribution to the education of that group of early"civil enginerrs"．
December 5^th
Ice for the Metropolis，by Malcolm Tucker．Well before the arrival of freezers，there was a demand for ice for food preservation and catering，Malcolm will explain the history of importing natural ice and the technology of building ice wells，and how London's ice trade grew．
February 6^th
An Update on the Cotsword Canals，by Liz Payne．The Smoudwater Canal is moving towards reopenling．The Thames and Severn Canal will take a little longer．We will have a report on the present state of play．
March 6^th
Eyots and Aits-Thames Islands，by Miranda Vickers．The Thames had many islands．Miranda has undertaken a review of all of them．She will tell us about those of greatest interest．
Online bookings：www．canalmuseum．org．uk/book
More into：www．canalmuseum．org．uk/whatson
London Canal Museum
12-13New Wharf Road，London NI 9RT
www．canalmuseum．org．ukwww．canalmuseum．mobi
Tel：020 77130836

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