Television by itself is not detrimental to improving family ties and munity spirit .为什么improving而不用improve?thank you!还有detrimental能否换成deleterious? 英语
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【答案】 1.根据英语法,detrimental to 后面要有个名词（或动名词）.
这里的“ improving” 是当动名词用的.
也就是说 improve (动词) =》 improving （动名词）.
例：Smoking is detrimental to longevity.
Overeating is detrimental to health.
2.可以,Harmful,detrimental 和deleterious 是同义词,但deleterious是个相当“古老”的词语,现在较罕见.