愈发君，补充一下Ron对comma+ing用法的说明：
The comma+ing modifier should only be used when:
(1)It modifies the entire action of the preceding clause and it applies to the subject of that clause
(2) If one of the following is true:
(a). the ing action is simultaneous with the main action
(b). the ing action is the direct consequence of the main action
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发表于 2016-10-18 07:34:28
