1. Because of being inexperienced, she lost her job (because of N/V-ing= because+a clause: vì)

2. Since my mother didn't mind our singing, we did it quietly (since=because: bời vì)

3. The hotel we saw first was rather expensive so we decided to look for another (so: vì vậy)

4. I really enjoyed the concert although the music was too loud (although+a clause: mặc dù)

5. Cindy and David left for work after they had had breakfast (miêu tả 2 hành động trong QK, cái nào xảy ra trước và kết thúc trước chia QKHT, còn lại chia QKĐ)

1) She lost her job because she was inexperienced. (because of)

=> Because of being inexperienced, she lost her job.

*Giải thích: Because of đứng trước N hoặc V-ing để chỉ nguyên nhân của sự việc, hành động.

2) My mother didn't mind our singing. We did it quietly. (since)

=> Since my mother didn't mind our singing, we did it quietly.

*Giải thích: Ở đây, since chỉ lý do của hành động, tương tự because.

3) The hotel we saw first was rather expensive. We decided to look for another. (so)

=> The hotel we saw first was rather expensive so we decided to look for another.

*Giải thích: so là liên từ chỉ kết quả, mang nghĩa: "vì vậy", "vì thế".

4) I really enjoyed the concert. The music was too loud. (although)

=> I really enjoyed the concert although the music was too loud.

*Giải thích: Sau although sử dụng mệnh đề gồm chủ ngữ và động từ.

5) Cindy and David had breakfast. They left for work. (after)

=> Cindy and David left for work after they had had breakfast.

*Giải thích: Miêu tả 2 hành động xảy ra trong quá khứ. Hành động xảy ra trước và kết thúc trước chia ở quá khứ hoàn thành. Hành động sau chia ở quá khứ đơn.