Rock samples taken from the remains of an asteroid about twice the size of the 6-mile-wide asteroid that eradicated the dinosaurs have been dated at 3.47 billion years old and thus are evidence of the earliest known asteroid impact on Earth.
语法 Sentence Correction-690
标记
正确的用户笔记
Fay Drew 2014-03-22 10:42:51
date as
sailsweek 2014-04-11 15:40:02
Date的固定搭配：date to 后面是ago，且to后面直接接年代数字（不需要接be）；date at 后面与old搭配。(具体参见prep1-256)
lixiaoye1002 2016-05-13 17:51:08
date at 后面是years old date to 后面是ago
halowwww 2016-12-17 22:45:04
the only difference between (c) and (e) is idiomatic expression. you don't say "dated to be..."; you do say "dated at...".
糯米团子QUQ 2016-11-01 14:33:10
Date的固定搭配：date to 后面是ago，且to后面直接接年代数字（不需要接be）；date at 后面与old搭配。没有date to be这个用法。
Hellosaaama 2016-10-28 20:39:02
rock samples have been dated at XXX years old
又是羊 2016-10-04 04:39:51
C) dated to be错误，没有这个用法，dated at正确
serene301 2016-09-15 01:02:07
have been dated at
feizhutou 2016-09-13 23:53:37
date to ----ago date at ----old 固定搭配 牢记！！！！
琴惊 2016-08-03 21:50:50
date to 后面是ago，且to后面直接接年代数字（不需要接be）；date at 后面与old搭配
fannnnieee 2016-07-03 02:24:35
date at xx years old; date to be xx years ago
JaneWon 2016-06-01 19:33:11
date at vs date to
huiminzi1124 2016-05-17 17:04:16
date to；date at 的用法都对 若把dated to be 中的be去掉在C E句义相同的情况下 选C to表动作 at表状态 两者比较 表动作的更好 要注意，date to后面直接接数字就好 Date的固定搭配：date to 后面是ago，且to后面直接接年代数字（不需要接be）；date at 后面与old搭配。(具体参见prep1-256)
