This is the 5928th most frequent Chinese word.
大半年
"大半年" means "more than half a year."
In this sentence, '大半年' is used to express an approximate duration of time, indicating roughly more than half a year.
他已经学习了中文大半年了。
He has already studied Chinese for over half a year.
Here, '大半年' suggests a duration since the last occurrence of meeting the person, emphasizing that it is slightly more than six months.
我和她大半年没有见面了。
I haven't met her for over half a year.
In this context, '大半年' refers to an extended period spent on completing an activity, specifically reading a book.