A Film Review

The drama film “A Good Woman” is based on the play “Lady Windermere’s Fan” by Oscar Wilde. The different titles hint that the two will focus on different things: the film leads the audience to judge if whether the woman is “good or not” "whether" sounds better than "if" when there are only two options; while the play seems to be telling a story about the “fan”。
The film has made some changes, for example, the climax happens in Lord Darlington’s Yacht, instead of his house. I think this is better because this means that Lord Darlington will not give Lady Windermere a stable future, and this is dangerous. (?)
But I prefer like both endings. In the play, Mrs. Erlynne told Lord Augustus the truth--- of course not the really whole (?) truth, and it works ---he believed her and proposed again ,then they will live together happily. While at the end of the film, when Mrs. Erlynne was leaving on the airplane, heavyhearted, she found Lady Windermere’s fan in the back bag of the front seat and Lord August sat next to her and said Lady Windermere told him the truth -----of course not the whole truth either (?). Whatever In any case he also believed her and decided to follow Mrs. Erlynne. Though I think that according to Lady Windermere’s character, she will would never allow her do this kind of thing, when thinking about it again, I find it makes sense that what happened (?) really helped Lady Windermere to grow up and because she really appreaciated Mrs. Erlynne for sacrificing her fame and decided to retrieve some for Mrs. ERlynne. In this way the director wants to show that Mrs. Erlynne is not that tricky scheming and is “a good woman”.

Your English is very good,  despite a few small mistakes you use a wide variety of sentence structures and collocations and overall it all looks very natural.

However sometimes your ideas are not that clear. For example, you say she told the truth, but what exactly was the truth? You say "it makes sense that what happened really helped Lady Windermere to grow up", but what exactly happened that was so important? I hope you see what I mean - remember your reader probably hasn't seen the movie or play.

When you're writing a review, it's maybe best to avoid summarising the plot as this is hard to do without confusing the reader. But if you do summarise, be very clear about what you mean.

Nice job! Your English is very good!