重点讲解：
1. stick out
伸出；探出；
eg. There are small pieces of metal that stick out for you to stand on and hold on to.
有许多突出的小金属块供你站在上面和抓在上面。
eg. For example, children often stick out their tongues to tease each other.
例如，孩子们通常吐舌头互相嘲弄。
2. make sure
一定要；设法保证；
eg. Just make sure you shut the gate after you.
进来后务必关上大门。
eg. We try to make sure children don't feel intimidated on their first day at school.
我们努力确保孩子们在上学的第一天不胆怯。
3. be supposed to do sth.
（按计划或期望）应当，应该，须做某事；
eg. As an impartial observer my analysis is supposed to be objective.
作为中立的观察员，我的分析应该客观。
eg They are supposed to be here at about half four.
他们应该在4点半左右到达这里。
4. be sure to do sth.
（事情的发生）一定，必然；
eg. That news is sure to make one indie band very happy.
这个新闻绝对会让某个独立品牌非常开心。
eg. He's sure to get somewhere if he persists.
只要他有恒心，定能有所成就。