This is the 4956th most frequent Chinese word.
这部
"This" for a specific item, often a book, movie, or work.
In this sentence, '这部' refers to a specific movie, indicating 'this'. It indicates that the speaker is talking about a particular movie they presumably mentioned earlier or are pointing out.
这部电影很感人。
This movie is very moving.
Here, '这部' denotes 'this' in reference to a novel, again specifying and identifying a particular piece that the speaker refers to.
这部小说我已经读过两次了。
I have read this novel twice.
In this usage, '这部' once more means 'this', applied to a 'work' (artwork or similar), to inquire about opinions on a specific piece of work.