6-WHEN
* Thay cho trạng từ, cum từ chỉ thời gian (time) (on that day, in the year...)
* Thường xuất hiện trong cấu trỳc :
... noun / pronoun (= time ) + when + subject + verb ...
Ex: She will never forget the day. She first met him on that day
She will never forget the day when she first met him
CONDITIONAL SENTENCES
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