Some anthropologists believe that the genetic homogeneity evident in the world’s people is the result of a "population bottleneck" -that some time in the past our ancestors suffered an event so that their numbers were greatly reduced, and thus our genetic variation.
语法 Sentence Correction-15393
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正确的用户笔记
hetatomato 2015-05-14 11:30:02
at 不能省略， some time是名词短语，at some time 或 sometime才能做状语。
lanyuer 2015-09-07 22:01:24
破折号的确是解释的意思，但是并不妨碍平行。 破折号后面解释的是前面的整个 "Some anthropologists believe that the genetic homogeneity evident in the world’s people is the result of a ‘population bottleneck’"。作用是用更通俗易懂的语言来表达前面整句话。 Anthropologists believe X - (they believe) Y. X = that the genetic... Y = that at some time... the sentence 后面 故意用了 their numbers were greatly reduced 被动语态 不利于接受信息 没有 B 好
小欣欣 2014-09-24 20:15:36
缺了个at 没有at 就要用sometime而不是some time这个名词性短语
胖哒鱼 2016-07-01 19:23:34
some time 这个正儿八经的名词，可以直接做状语修饰动作suffer了？名词可以作状语吗？不行。状语，就是形容词、副词、分词、to do、从句什么都可以就是不能是名词。
lixiaoye1002 2016-05-12 22:25:39
some time 前面没有at 错 be reduced被动不好， 且破坏平行 and前后都应该是名词
Ivycoco 2016-03-05 05:18:42
at 不能省略， some time是名词短语，at some time 或 sometime才能做状语。
Ivycoco 2016-03-05 05:18:41
at 不能省略， some time是名词短语，at some time 或 sometime才能做状语。
GHann 2015-12-24 11:39:26
固定搭配：“so that”不同于“so(such)……that……”前者连接的是主句的目的，而后者连接的才是主句的结果，因此本选项误用搭配“so that”。 “so as to”不同于“so(such)……as to……”前者连接的是主句的目的，而后者连接的才是主句的结果
lyf0420 2015-11-28 22:33:22
句子意思--破折号并不影响平行,that... that...注意,so that 破坏平行
酱子 2015-08-19 13:19:44
[some time／sometime ／／句意：主被动] 1、 some time是 名词短语，要加at ，at some time，sometime可以做副词 。2、suffered an event so that their numbers were greatly reduced。 数目减少用了被动 与 and 后面部分不平行。 应该是event that reduce numbers and thus our genetic variation
mmmz 2015-07-07 04:37:18
some time表示一段时间，at sometime in the past是正确表达
