&amp;amp;amp;amp;amp;amp;amp;amp;amp;quot; sb.&amp;amp;amp;amp;amp;amp;amp;amp;amp;quot;和&amp;amp;amp;amp;amp;amp;amp;amp;amp;quot; sth.&amp;amp;amp;amp;amp;amp;amp;amp;amp;quot;的使用方法是怎样的?_7