$1. $ Because he didn't practice much, he failed the speaking test

$→$ So là liên từ chỉ kết quả

$→$ Because dùng để chỉ nguyên nhân của sự việc, hành động

$→$ Thì QKĐ : S + Ved/V2

$2. $ Her bag is different from mine

$→$ S + V + the same + N + as + O

$→$ S + to be + different from + O 

$→$ Not the same as = Different from

$\text{@Aminann }$

1. Because he didn't practice much, he failed the speaking test. (Because clause, clause = Clause, so clause)

2. Her bag is different from mine. (not the same as = different from)