064 (A) A is after B (B) backtrack

Ross A is after B. A 緊釘著 B Teacher has been after us about preparing for the test for weeks 己經好幾個星期，老師整天緊釘著我們要我們準備考試 backtrack原路返回 Let's take this trail to the summit and backtrack to the campsite. 我再沿著這條步道到山頂，再原路返回營地

Ben A is after B. A 緊釘著 B Jack's mom has been after him about preparing for the SAT test for couple of weeks. Jack的媽已經盯他好幾個星期，要他好好準備SAT考試。 backtrack We had to backtrack about a mile. 我們必需要原路返回一英里。

Heidi A is after B. A 緊釘著 B My boss was after me for the data since we were back from Taiwan last year. 自從去年我們從台灣回來後 我老闆就緊盯著我要data backtrack原路返回 If you are not sure if this path would take us go back to the entrance, it is better to backtrack to the one we just passed. 如果你不確定這條路能不能帶我們回到入口 那我們最好原路折返

Kate A is after B Because the safe problems,Parents are after babys   因為安全問題,父母要緊盯著嬰兒 backtrack They run and backtrack whole morning in order to exercise 為了運動,他們整個早上跑又折回來