问题描述：
learned abou 和learn 有什么区别.
we have (learned about) all the elements on the periodic table in our science classes.
we have learned correct grammer ,punctuation ,and spelling in our English classes...
这是完形填空中的一段话,括号里是要填的.选项有learned 和 learned about.
貌似是个排比句,da an 是learned about,为什么learned 不行!
we have (learned about) all the elements on the periodic table in our science classes.
we have learned correct grammer ,punctuation ,and spelling in our English classes...
这是完形填空中的一段话,括号里是要填的.选项有learned 和 learned about.
貌似是个排比句,da an 是learned about,为什么learned 不行!
问题解答：
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