`1.` Although she worked hard as she could, she didn't finish work on time.

`-` Although + MĐ tương phản : mặc dù

`2.` Because of the boring story, we turned off the light and went to bed.

`-` Because of + cụm N/V-ing : bởi vì

`3.` Hoa asked Nam if his sister had a bookshop in HCM City.

`-` Nghi vấn : S + asked/ wanted to know/ wondered + if/whether + S + V ( đổi ngôi / lùi thì )

`-` HTĐ `->` QKĐ

`4.` Loan's brother told her if she could get back home by half past ten.

`-` Nghi vấn : S + asked/ wanted to know/ wondered + if/whether + S + V ( đổi ngôi / lùi thì )

`-` can `->` could

`5.` Jim was travelling in Paris where he met his old friend.

`-` Where thay thế trạng từ chỉ địa điểm / nơi chốn

`1`.Although she worked hard as she could , she didn't finish work on time

`->` Although + C1 + C2 : Mặc dù

`=>` Dùng để chỉ về sự đối lập giữa `2` mệnh đề

`2`.Because the story was boring , we turned off the light and went to bed

`->` Because + C1 + C2 : Bởi vì

`=>` Dùng để chỉ về nguyên nhân , lý do

`3`.Hoa asked Nam if his sister had a book shop in Ho Chi Minh City

`->` Tường thuật NV ( Yes / No ) ( `3 , 4` ) :

`=>` S + asked + O + if / whether + S + V ( lùi thì )

`\rightarrow` HTĐ `->` QKĐ : S + Ved / V2

`4`.Loan's brother asked her whether she could get back home by half past ten

`->` Can `->` Could

`5`.Jim was travelling in Paris where he met his old classmate

`->` Where là ĐTQH dùng để chỉ về địa điểm

`->` Where `=` Paris

`\text{# TF}`