七年级英语词形的变化

问题描述:

七年级英语词形的变化
详细一点,越多越好!

1.work—worker 2.vent—inventor(人)--invention(物) 3.use—useful-used 4.teach—teacher 5.conduct—conductor 6.care—careful--carefully 7.play—player 8.visit—visitor 9.careless—carelessly—carele...