九年级第四单元短语:

1、把它捐给慈善机构:give it to charity;

2、医学研究:medical research;

3、紧张:get nervous;

4、参加大考:take a big exam;

5、有助于:help with;

6、在公共场合:in public;

7、几乎不:hardly ever;

8、全校:the whole school;

9、未经许可:with