In stitches 表示笑得停不下来。常见结构是 be in stitches，或 have someone in stitches，表示逗得某人大笑不止。这里的 stitch 是身体侧面突然的刺痛，类似跑步后出现的岔气。
什么情境适合说 in stitches？
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be in stitches; have/keep someone in stitches
- The best man's speech had all the wedding guests in stitches.
- My little brother kept us in stitches during the long drive to the coast.
- We were in stitches when our manager tried to dance at the office party.
修改原因
修改前His jokes made us in stitches all evening.
修改后His jokes had us in stitches all evening.
Made us laugh 很常见，因此容易把 in stitches 也接在 make 后面。但这条习语使用 have 或 keep：have someone in stitches。可以说 made us laugh，也可以说 had us in stitches，不能把两种结构拼在一起。
Stitches 也可以指医生缝合伤口时的针脚：The cut needed six stitches。具体含义要看语境；in stitches 作为这里的习语时，说的是大笑。这个表达较口语化，作文里可以更直接地用 find something hilarious 或 laugh a lot。
动手练习
The comedian was so funny that the whole audience was ___ from start to finish.
查看答案
in stitches — 喜剧演员太好笑，观众从头到尾笑个不停，所以是 in stitches。On edge 表示紧张不安，与大笑不同。
想一个最近把你逗得大笑的人。说明对方是谁，以及具体是什么让你发笑。
My flatmate had us in stitches last night with his story about getting locked out of a hotel room in his pyjamas.
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