'I cooked it myself, so be careful!' he joked.

“我亲自下厨做的，所以要小心点哟！”他开玩笑说。

《牛津词典》

If he doesn't want to be involved, then so be it.

要是他不想参与，那就随他的便好了。

《牛津词典》

So be careful whenever a company says its product is "the most popular".

所以，当一家公司说它的产品是“最受欢迎的”时，一定要小心。

youdao

So be sure to disinfect tools with alcohol or bleach after each plant.

VOA: special.2009.10.06

But remember that you do have recitation on Tuesday, so that could be very helpful with the problem-set, so be sure to go to recitation on Tuesday, and have a great long weekend.

记住，周二有习题课，这对做课后题很有帮助，所以周二一定要来上习题课，周末愉快！

麻省理工公开课 - 化学原理课程节选

And your friend is saying, "Oh, I'm so glad to be here." "This is so beautiful, so glorious."

你的朋友说，“哦，我真高兴能来这儿。”“这里这么漂亮，这么气势恢弘。”

I've been 课堂 - SpeakingMax英语口语达人

Seattle is famous for its music scene, so be sure to catch a show.

BBC: A perfect day in Seattle

The sticky mud has been known to swallow whole boots, so be sure to follow Hawkins' instruction closely.

BBC: London from the tide line

The restaurant only books one month ahead, so be flexible with your timing for a table.

BBC: Business Trip: New York