4. Because of the husbands' absence, women went to work in factories.

→ Because = bởi vì

→ Because + clause

→ Because of + N/V_ing, clause 

5. Despite the fact that she didn't ask him, he helped her.

→ Despite/In spite of = mặc dù

→ Despite/In spite of + the fact that + clause

→ Despite/In spite of + N/V_Ing

6. Although it was raining heavily, the boys were playing football.

→ Although = mặc dù

→ Although + clause, clause

4.Because of the husbands' absence, women went to work in factories.

-> Cấu trúc: Because + clause

-> Cấu trúc: Because of + N/V_ing, clause 

-> "Because of" là một giới từ kếp, được dùng trước danh từ, V-ing, đại từ để chỉ nguyên nhân của sự việc, hành động.

5. Despite the fact that she didn't ask him, he helped her.

-> Cấu trúc: Despite/In spite of + the fact that + clause

-> Despite/In spite of + N/V_Ing

-> Cả Despite và In spite of đều đứng trước “the fact that” tạo thành một mệnh đề trạng ngữ. Theo sau mệnh đề này là mệnh đề chính của câu. 

6.Although it was raining heavily, the boys were playing football.

-> Although + clause, clause