spend 主语是人 . spend……on sth. . spend……(in) doing sth. 例如：He spent twenty yuan on the book. he spent two hours (in) finishing the work
spend……on sth. spend……(in) doing sth.
spend 主语是人
. spend……on sth.
. spend……(in) doing sth.
例如：He spent twenty yuan on the book.
he spent two hours (in) finishing the work.
答：I spent an hour(in) reading.(in通常省略不用，最好不用，更不要养成spend ...in doing sth.的习惯) 我花了一小...详情>>
答：详情>>
