英语改错1.He did all what he could to help those homeless children.
问题描述：
英语改错1.He did all what he could to help those homeless children.
答
He did all that he could to help those homeless children.
答
1.He did all what he could to help those homeless children.
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could------>can
答
He did all what he could to help those homeless children.两种改法：1、把what改成that,当先行词为all时,定语从句要用that引导.有一首歌很好听,叫All that she wants.2、把all去掉,what he could做did的宾语从句...
答
He did all what he can to help those homeless children.