2.地点状语从句

where

The tree grows well in wet places

Where it is wet the tree grows well

3.原因状语从句

1）引导词：（均表示因为）

because，as，since，in that ，seeing that，considering that，now that，

given that

2）连词

for

3）介词短语

because of

due to

owing to

thanks to

for the sake of

as a result of

例：He had a car accident because he was careless.

He had a car accident for he was careless.

He had a car accident because of his carelessness.