Ozone, a special form of oxygen that screens out harmful ultraviolet rays, reaches high concentrations twelve miles above Earth, where it has long appeared as being immune to human influence; we have now realized, though, that emissions of industrial chlorofluorocarbons deplete the ozone layer.
语法 Sentence Correction-3598
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正确的用户笔记
王eee_q 2014-07-31 02:10:39
时态上：过去完成时 标志：后半句 have now realized现在完成，前半句是过去的观点用过去完成
许栩 2016-11-12 15:54:51
appear as + n./adj.
shisu0610041 2015-06-04 17:28:38
appear as being用法错误。
huiminzi1124 2016-06-27 15:08:43
时态上：过去完成时 标志：后半句 have now realized现在完成，前半句是过去的观点用过去完成
anne_yu 2016-05-07 13:15:16
时态： 针对 now realized的long,用过去完成时 appear 用法： V: appear + adj /to do/ that X: appear as being
ypheroin 2016-01-13 15:22:20
appear as being 错误。
BobZ 2015-12-14 01:19:29
没有appear as这种用法
HYX 2015-11-19 14:02:46
appear as being 没有这种用法
charlene123456 2015-10-16 12:23:38
臭氧层不受人类影响已经是过去的事了，现在工业氟排放已经损坏了臭氧层，同时as being adj 错误
moneysharon 2015-08-10 08:28:16
appear as being用法错误 1、作系动词, =seem, +adj. 作表语。 2、作动词, appear to inf动词不定式, appear that从句, it appears that… 另，immune to: not affected by sth不受影响；immune from：免除
Jessicajy 2015-06-18 14:38:02
appear as being 用法错误
