Your friend Zhang Ling is not good at English.send an email to your penfriend Simon to ask for advice.

Dear Simon
How are you?My friend Zhang Ling isn't good at English.I have gave some advice to him . But as you konw ,I'm a chinese,
I don't konw how to impove his English exactly. So could you give me some advice for him?
Thanks a lot.
Yours ...(人的名字）