卫生类职称英语学员大家好：卫生类职称英语考试学习最大的障碍是词汇的问题，
职称英语考试所涉及的词汇量 和短语主要依据本大纲，对申报不同级别的应试者要求认知的词汇量不等：
1、申报卫生类A级的人员应认知6000个左右的单词和一定数量的短语；
2、申报卫生类B级的人员应认知5000个左右的单词和一定数量的短语；
3、申报卫生类C级的人员应认知4000个左右的单词和一定数量的短语。
要求太高了！从高频词汇学——效果会更好————京华英语网校----
进入卫生类职称英语高频词汇讲解试听
http://www.edutv8.com/class/play/?97-0-0.html
fall behind
落后; 下降; 退后
He fell behind when we were climbing the mountain.
我们爬山时, 他掉队了。
Production has fallen behind in the last few months.
最近几个月生产下降了。
Don't fall behind now, just when you're doing so well.
你干得很出色, 这个时候可别后退。
Several of the runners fell behind in the race.
有几个赛跑者在比赛中落在后面了。
逾期(付款等)
If your payments of rent fall behind, you will be asked to leave.
如果你不如期交房租, 你就会被撵走。
Don't fall behind with your gas bill.
不要拖欠煤气费。
He has fallen behind with his correspondences.
他有一些信件没有及时回复。
处于较低水平
The work of this class has been falling behind recently.
近来这个班的成绩一直处于较低水平。
