

週末、弟に数学を教えるつもりです。
あとで電話番号を教えるね。
子どもに英語を教えるのが好きです。
"おしえる(教える)" is in the lesson "Verbs 9" (Level 21), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,379 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.