by this time的音標為：[ba? e?s ta?m] ，中文翻譯為“到這個時候”。速記技巧是：by是介詞，介詞后用時間點。

By this time 的英文詞源是by + this time，意思是到這個時候，到目前為止。

By this time 的變化形式有過去式和過去分詞兩種形式。其過去式為“by this time”，過去分詞為“by this time”。

相關單詞有：

1. “until this time” 到目前為止，這個詞組中，“until”是一個介詞，表示“到...為止”。

2. “this time” 這個時候，這個詞是一個副詞，表示某個時間點。

3. “this period” 這個時期，這個詞是一個名詞，表示一段時間。

4. “this moment” 這個時刻，這個詞是一個名詞，表示某個特定的時間點。

5. “this stage” 這個階段，這個詞是一個名詞短語，表示某個階段或時期。

6. “this age” 這個時代，這個詞是一個名詞短語，表示某個特定的歷史時期。

7. “this season” 這個季節，這個詞是一個名詞短語，表示某個季節。

8. “this interval” 這個間隔，這個詞是一個名詞短語，表示一段時間或空間距離。

9. “this date” 這個日期，這個詞是一個名詞短語，表示某個特定的日期。

10. “this era” 這個時代，這個詞是一個名詞短語，表示某個特定歷史時期或時代。

以上這些單詞都與“by this time”這個時間概念有關聯，它們在英語中都有不同的用法和含義。同時，“by this time”這個時間概念也經常與“now”、“then”、“later”、“earlier”等詞語一起使用，表達不同的時間順序和語境。

常用短語：

1. by this time tomorrow

2. by this time next year

3. by this time next week

4. by the time

5. by now

6. up to now

7. until now

例句：

1. I hope to have finished my homework by this time tomorrow.

2. By the time you arrive, we will have completed the project.

3. I hope to be able to travel next week by this time.

4. We must make sure we have all the information we need by this time next week.

5. I can"t believe I"ve been here for months and still haven"t seen everything by now.

6. Up to now, we haven"t found any evidence of wrongdoing.

7. We must ensure that we are ready for any eventuality until now.

英文小作文：

If you could go back in time, where would you go and why?

If I could go back in time, I would definitely go back to my childhood. I would like to relive those carefree days when I had no worries or responsibilities and just enjoyed being a kid. I would also like to see my family and friends then, and see how they have changed and developed over the years. It would be interesting to see how our lives unfold differently at different stages of our lives, and how we adapt to different situations and challenges. Finally, I would like to see what the world was like back then, and experience firsthand the changes that have taken place over the decades. It would be a humbling experience to see how much we have progressed as a society, but also to remember where we have come from and appreciate the hard work and sacrifices that have been made to get us to where we are today.