The grammar was explained to him. OK He was explained the grammar. Problém je
v tom, že “explain” je sloveso ditranzitivní. Diskuzi o trochu jiném
pojmu, která má nicméně relevanci k Vašemu dotazu, najdete zde:
‘The pupils were explained everything to by the teacher’. Všimněte si
poznámky:
The pupils were explained everything by the teacher. (…) there are
plenty of people who will not agree that this sentence is grammatical.
Totéž (“plenty of people who will not agree that this sentence is
grammatical”) platí pro “the pupils were explained everything” nebo “he
was explained the grammar”. Použití trpného rodu v daném
případě je málo pravděpodobné, ale i když, tak He
had the grammar explained to him, but he still kept on making the same
mistake.