Buy sb sth,too short and tight

2013八年级英语上册1-10短语及精选习ppt
= buy sb. sth. 为孩子们买生日礼物 buy some presents for
inform sb of sth等类似结构归纳ppt
= buy sb. sth. 为某人买东西我想为他买一个生日礼物.
watch sb do sth