he knows a thing or two about English这句话的意思

he knows a thing or two about English这句话的意思 谁知道knows a thing or two的意思? Tom knows a thing or two about Japanese."a thing or two to my joy the scientist knows a thing or two about the techn a thing or two He loves animals and he knows all about them.请问这句话的all about He knows a bit of English.的同义句 He knows （） () English. he knows—about english names A：manyB：a lot C：a lot of D：lots his aunt knows little about english,___?A.doesn't he B does He knows a lot about hispen within a day or two的意思 He knows better than _____(do) such a silly thing.