持續做某事，不因困難而停止
寫作用途
continue doing something despite difficulty or delay
After two disappointing drafts, Maya kept on revising her speech.
寫了兩份不理想的草稿後，Maya 仍繼續修改演講稿。
寫作技巧
Use an -ing form after keep on to name the continuing action. Keep on often emphasizes persistence when stopping would be easier.
感覺或效果隨時間逐漸減弱、消失
寫作用途
gradually become weaker and finally disappear
By the end of lunch, the chill from the icy drink had worn off.
午餐快結束時，冰飲帶來的寒意已逐漸消退。
寫作技巧
Make the fading effect or feeling the subject. Wear off is intransitive here, so do not place a direct object after off.
超過平常睡覺時間仍保持清醒
寫作用途
remain awake later than the usual bedtime
Jon stayed up until midnight to finish the history timeline.
Jon 為了完成歷史時間軸，熬夜到午夜。
寫作技巧
Use until to give the ending time, or use to plus a base verb to explain the purpose. Stay up means remain awake, not get out of bed.
從某地出發前往目的地
寫作用途
begin a journey toward a destination
At six thirty, our science club set out for the wetland center.
六點半時，我們的科學社出發前往濕地中心。
寫作技巧
Use for before the destination and at before the departure time. Set is unchanged in the past tense: set out, not setted out.
鐘錶走時準確
寫作用途
show the correct time consistently
Although the library clock is old, it keeps good time throughout the day.
圖書館的時鐘雖然老舊，整天走時仍很準確。
寫作技巧
Use this expression for a clock or watch that stays accurate. It does not describe a person arriving punctually.
把可供販售的物品全部賣光
寫作用途
sell every available item or ticket
By noon, the student council had sold out all three hundred concert tickets.
中午前，學生會已賣光三百張音樂會門票。
寫作技巧
Name the seller as the subject and the complete stock as the object. Sold is the past form of sell; do not use selled.
在活動中玩得愉快、享受其中
寫作用途
enjoy an activity or experience
We had a good time trading stories around the campfire.
我們圍著營火分享故事，度過了愉快的時光。
寫作技巧
Use an -ing form to name the enjoyable activity, or at before an event. In the past, change have to had.