宾语从句必须用陈述语序.
False:He is wondering when can he finish this difficult job.
Right:He is wondering when he can finish this difficult job.
如果宾语从句后有宾语补语,用it作形式宾语,把宾语从句后置
eg．You may think it strange that he would live there．
当宾语从句的引导词是who,which,what,when,where,how,why等表疑问时,不能按正常语序安排,经常将这类引导词置于句首
Who do you think the public might choose as their favorite singer this year?
你认为今年公众会选谁为他们最喜欢的歌手.