1.He isn't good at English . He can't understand what they mean .
IF....................................................................................................
2. "We aren't working hard enough . the works said.
The worker ........................................
1.He isn't good at English . He can't understand what they mean .
IF....................he was good at English he could understand what they mean . ...............................................................................
2. "We aren't working hard enough . the works said.
The worker ...................said that they weren't working hard enough.....................