She doesn't go to school for her illness.
Because of being ill,she didn't go to school.
Being ill,she didn't go to school.
because只能放在句子中间,在它之前的是结果,后面的是原因.例如:
She didn't go to school because she was ill,.
我没有去学校因为我病了.
so做所以解释时也是放在句子中间,在它之前的是原因,后面的是结果.例如:
She was ill so she didn't go to school.