我曾经去过新加坡，在那工作3年的翻译：I have been to Singapore, then worked for 3 years 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

I have been to Singapore for three years in that

I have been to Singapore, then worked for 3 years

I have gone to Singapore's, works for 3 years in that

I went to Singapore in the 3 years of work.

I have been to Singapore, then worked for 3 years