如何使用 "then" 造句

1. Then she started throwing up .
接着她就开始呕吐。
2. His wife then asked me .
他的妻子然后问我。
3. Then it started to rain .
然后又开始下雨了。
4. What then is productive debt ?
那么什么是有益债务?
5. Then we began our climb .
然后我们就开始爬山。