It's unlikely that he can pas the GRE.他不大可能通过GRE考试。

1. There must be something wrong with the computer.一定是电脑出了问题。2. She can't be in her office.她不大可能在她的办公室。3. I feel that he's not affected. 在我看来他没受什么影响。4. That's about it.差不多是这样。