他的饭店还行英文怎么说

"His restaurant is decent" 是表示饭店还不错的一种常见表达方式。

"Decent" 是一个形容词，意思是较好的、体面的、相当的。

例句：

The food at his restaurant is decent. 饭店的食物还不错。
The service at his restaurant is decent. 饭店的服务还不错。
The ambiance at his restaurant is decent. 饭店的氛围还不错。

如果想用更夸张的语气来表示饭店很好，可以使用 "excellent"、"fantastic" 或 "outstanding" 等形容词。

例句：

The food at his restaurant is excellent. 饭店的食物非常好。
The service at his restaurant is fantastic. 饭店的服务非常棒。
The ambiance at his restaurant is outstanding. 饭店的氛围非常出色。