Question

1. When he was ill, he didn't play football.

2. Being ill, he didn't play football.
----------------------------

3. If he is ill, he will not play football.

4. Being ill, he will not play football.
-----------------------------

5. Although he was ill, he played football.

6. Although being ill. he played football.

7. Being ill, he played football.
-------------------------
Would you check the sentences, pelase?
Which ones are ungrammatical?

Answer 1

1 and 2, 3 and 4, and 5 are all fine.

6 is strange; 7 is incorrect.