He wondered if his mother will buy him birthday present.他不知道他妈妈会不会给他买生日礼物.
He has waited for his mother at the station for minutes.他在车站等他妈妈等了好几分钟了.
If you gave me some money,that would be a big help.如果你给我一些钱,那将对我有很大的帮助.
不明白的再问哟!请记得采纳,多谢!