如果你想说你学了英语然后又学了日语，你可以说 "I learned Engpsh and then I learned Japanese." 或者你可以说 "I studied Engpsh and then I studied Japanese." 你也可以用更简短的说法，比如说 "I learned Engpsh and Japanese." 或者 "I studied Engpsh and Japanese." 注意，如果你想说你学了英语然后就学日语，你应该说 "I learned Engpsh and then switched to Japanese." 或者 "I studied Engpsh and then switched to Japanese." 希望这些例句能帮助你表达你的想法。