問題: What did you do last time you were by yourself?

Last time I was alone, I just relaxed with a book. I found a quiet spot and enjoyed reading for a while. It was a nice way to unwind.

The last time I was by myself, I took the opportunity to relax and unwind by reading a book. I found a cozy corner and got lost in the story, which was a wonderful way to de-stress.

1. 過去簡單式：使用過去簡單式（"I took"、"I found"、"was"）有效地描述了過去的行動和經驗，顯示出對如何敘述過去事件的清晰理解。 2. 不定詞的使用：片語 "to relax and unwind" 使用不定詞來表達行動的目的，使句子更清晰。

When I was alone last time, I used the time to clean my room. It was a bit messy, so I organized everything. It felt good to get it done.

The last time I was by myself, I decided to be productive and organized my room. It had become quite cluttered, so I took the opportunity to tidy up and create a more pleasant environment.

1.過去簡單時態：使用過去簡單時態（"decided"、"organized"、"took"）有效地描述了已完成的過去動作，與問題的語境相符。 2.因果關係：使用 "so" 將整理的原因與所採取的行動連接起來，展示了以連貫方式表達因果關係的能力。

I spent my alone time working on a hobby. I painted a picture, which was fun and relaxing. It was nice to focus on something creative.

During my last alone time, I indulged in one of my hobbies, which is painting. I spent a few hours working on a new piece, and it was both fun and relaxing to immerse myself in something creative.

1.過去簡單時態：過去簡單時態（"indulged"、"spent"、"was"）有效地描述了在上一次獨處時間內發生的已完成動作。 2.關係子句："which is painting" 是一個關係子句，提供了關於這個愛好的額外資訊，增強了句子的細節和清晰度。

I treated myself to a spa day at home. I took a long bath and did some skincare. It was a nice way to take care of myself.

The last time I was by myself, I decided to indulge in some self-care by having a spa day at home. I took a luxurious bath and followed it up with a skincare routine, which was a lovely way to pamper myself.

1.過去簡單時態：過去簡單時態的使用（"decided"、"took"、"followed"）有效地敘述了過去的行動，表明了明確的事件順序。 2.不定詞的使用："to indulge in some self-care" 使用不定詞形式來表達目的，顯示了行動的原因。