be serious about doing sth是什么意思?

be serious about doing sth. be serious about diong about.=be serious about sth. be serious about do还是doing? 请帮我用英语造一下句“be serious about”“have a chance of doing sth”“spe be worried doing sth 还是be worried about doing sth dream of/about(doing)sth是什么意思? 英语：What about doing STH 是什么意思 be worried about后接sth还是doing sth? be serious with/about 用（be)serious about 什么是动词结构?what about doing sth.talk to sb.about sth.be doing s be excited in doing sth?be excited about doing sth?区别