fall in with的音標為[f??l ?n ?v??]，基本翻譯為“與……相吻合；與……協調；與……意氣相投；與……交往；追趕；趕上；追上”。速記技巧為：fall（落下）+ in（進入）+ with（與…）→落下與…有關→與…相吻合。

fall in with的英文詞源是拉丁語fallere，意為欺騙，以及agere，意為做。因此，fall in with的含義是“與…相吻合，與…相符”。

變化形式：復數形式為falls in with，過去式為fell in with，現在分詞為falling in with。

相關單詞：

1. fall in love with：愛上

2. fall out with：與…爭吵

3. fall into line：跟上，符合

4. fall short of：達不到

5. fall into place：順利完成

6. fall prey to：成為…的獵物

7. fall off：下降

8. fall away：背棄，離開

9. fall into the trap：落入陷阱

10. fall into disuse：不再使用。

以上這些單詞都與fall in with有直接或間接的聯系，體現了英語單詞豐富的詞源和變化形式。

常用短語：

1. fall in love with

2. fall behind

3. fall off

4. fall into

5. fall out with

6. fall ill

7. fall asleep

例句：

1. I fell in love with her at first sight.

2. We fell behind in our work because of the weather.

3. The tree fell off the truck.

4. He fell into debt after the business failed.

5. They fell out with their friend over a trivial matter.

6. He fell ill with a cold.

7. She fell asleep after a long day of work.

英文小作文：

My favorite hobby is playing tennis, which I started when I was 12 years old. I enjoy the feeling of hitting the ball back and forth and getting exercise at the same time. However, my tennis skills are not very good, and I often fall behind my friends when we play together. I hope to improve my skills and become better at tennis in the future.

翻譯：

我最喜歡的愛好是打網球，這是我12歲時開始的。我喜歡來回擊球的感覺，同時也能得到鍛煉。然而，我的網球技術并不是很好，當我和朋友們一起打球時，我經常落后。我希望在將來能提高我的技術，變得更好。

其他相關短語和例句：

1. fall into line (with) 保持一致，遵從。例句：Please fall into line with the company"s policy on employee benefits.

2. fall off a cliff 急劇下降。例句：The company"s profits fell off a cliff after the economic crisis.

3. fall into ruins 衰敗，荒廢。例句：The old house fell into ruins after years of neglect.

4. fall out (of favor) 不受歡迎，失寵。例句：He fell out of favor with the boss and was fired from his job.