Step 1 Doing with the new words.
1.correction n. 订正，修改；校正 He made several corrections. 他用红墨水修改数处.under correction 在可能有错误，尚待改正的情形下 I’ll speak under correction. 我所说的话未必全对，请指正。
2. encouragement ① un. 激励；奖励；促进 He received a lot of encouragement from his teacher. 老师给他很大的激励。②鼓励的话或行为 The teacher’s words were a great encouragement to him. 教师的话对他是极大的鼓舞。
