以下の通り、誤植がありました。
ご購入いただいた皆様に謹んでお詫びし、訂正させていただきます。

P45　上から3つ目の例文
【誤】He have finished his homework with us.
【正】He has finished his homework with us.

P67　POINTカコミ内
【誤】You saw a rainbow over the mountain.
【正】I saw a rainbow over the mountain.