$\text{Ex1}$ 

$\text{1.}$ We enjoyed the film at the Ngoc Khanh Cinema although few people came to see it . 

$\text{2.}$ Although they spent a lot of money on the film , it wasn't a big success . 

$\text{3.}$ Although the acting is excellent , I don't enjoy the film . 

$\text{4.}$ I didn't find it funny at all although it was a comedy . 

$\text{5.}$ The film is based on a book that was written twenty years ago although it is set in modern times . 

→ Although : mặc dù

→ Although + clause 1 , clause 2 

→ clause 1 + although + clause 2 

→ Although : diễn tả 2 sự việc/hành động đối lập nhau