Less than 35 years after the release of African honeybees outside Sao Paulo, Brazil, their descendants, popularly known as killer bees, had migrated as far north as southern Texas.
语法 Sentence Correction-2816
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正确的用户笔记
fishanne 2015-12-24 21:13:27
First, the bees were released. Then, they migrated north. Finally, it was “35 years after” the release, by which time the bees had already migrated. Less than 10 years after her graduation from college, she had changed careers three times. 用after 避免逻辑主语的问题。
ztg591 2016-07-27 00:23:32
after + n.结构避免了逻辑主语问题
leahliulliu1 2016-11-12 00:56:14
记住正确的用法less than...years after
停不下来的雕兄 2016-12-18 14:18:51
过去完成时一般有所谓的second event. Second event happened in the past.
励志yy 2016-11-05 10:37:42
time marker: less than 35 years after. the migration happened before "35 years after" so we use past perfect.
Queeniebaby 2016-09-12 21:04:46
过去完成时要有 time maker
ztg591 2016-07-27 00:23:31
after + n.结构避免了逻辑主语问题
ypheroin 2016-03-22 23:12:53
做题时觉得less than 的逻辑主语是descendant不对，但事实上放在句首的是after 这个介词短语而不是less than，所以des是after 的逻辑主语。其他两个选项的since都是现在完成时的时间状语，不能用在had migrated的时态中。
Ines要上700 2016-03-04 18:16:22
is right as tense( "had" ) and "since" is rightly used.
fishanne 2016-02-11 12:53:14
Less than 10 years after her graduation from college, she had changed careers three times. 用after 避免逻辑主语的问题。
