`1`. The teacher couldn't hear the question since the class was so noisy.

Since = because: bởi vì

`2`. Even though Paul studied for weeks, he didn't pass his exams.

Even though + mệnh đề: mặc dù

`3`. We canceled our trip into the city because of the bad weather.

Because of + Ving/N: bởi vì

`4`. In spite of the heavy rain, we decided to go for a bike ride.

In spite of/Despite + Ving/N: mặc dù

$\text{@su}$

`1`, The teacher couldn't hear the question since the class was so noisy.

`->` Trong câu này, since = because = as

`2`, Even though Paul studied for weeks, he didn't pass his exams.

`->` Though/Although/Even though + clause 

`3`, We canceled our trip into the city because of the bad weather.

`->` because of + N/V-ing = because + clause = due to + N/V-ing

`4`, In spite of the heavy rain, we decided to go for a bike ride.

`->` In spite of / Despite + N/V-ing = Although + clause 

$\text{#BTS}$