I often go to bed at ten-thirty.同义句

I always go asleep at half past ten

I often don't go to bed until ten-thirty.

not.. until和肯定句的转换，不是吗

另外go asleep有吗?
fall/be asleep侧重“无意识地入睡、不想入睡而入睡”的含义
go to bed意为“就寝、上床睡觉”,着重指上床准备睡觉的动作。

暑假愉快