like: When we were on vacation, we went to the beach every day. → →
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When we were on vacation, we went to the beach every day. ☊ 
Hồi chúng tôi đi nghỉ, chúng tôi ngày nào cũng ra bãi biển. ☊ When we were on vacation, we went to the beach every day. ☊ Hồi chúng tôi đi nghỉ, chúng tôi ngày nào cũng ra bãi biển. ☊