1.重点单词：sign，sick，raise，alone
2．重点短语：homeless people，put up，hand out，call up，put off
3．重点句式：
You could ask hospitals to let you visit the kids and cheer them up.
She volunteers there once a week to help kids learn to read.
I'm making some signs to put up around the school.
I'm too busy with my studies this year.
However，few people think about what they can do to help others.
For example，we can make plans to visit sick children in the hospital or raise money for homeless people.
