Hi Anon Of your four sentences, the only one that isn't used is the first one: A soldier lost both of legs. I would say that "both his legs" sounds a bit more emphatic. Here are some similar examples using the word "houses": - both of the houses on the street (There are only two houses on that particular street) - both of the white houses on the street (There are only two white houses on the street) - both of them (both of the two things that have already been previously mentioned) - both houses (both of the two previously mentioned houses) - both white houses (both of the two previously mentioned white houses) - both of houses (incorrect -- you cannot use this to refer to two houses)
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