When I saw many young girls talking English with foreign buyers,I was ashamed.Because I could not do as that as they.如上面的句子,我这样用对吗?Because I could not do as that as they.

问题描述:

When I saw many young girls talking English with foreign buyers,I was ashamed.
Because I could not do as that as they.
如上面的句子,我这样用对吗?
Because I could not do as that as they.

Just say
"because I could not do what they do/did."