Unit 4
take place 发生
look into 调查
be caught in 遇（雨）；陷入（圈套）
be on hire 失火
work as从事
sweep away 扫除
hold onto紧紧抓住；保持住；不放弃
be upon 逼近；临近
pull...up 把......往上拽
get on onefeet 站立起来
fight for ones life 为生存而斗争
move up 上涨
fall down 跌倒；失败
tree after tree 一棵树接一棵树
cut down 减少；减价
up and down 上上下下；来来回回
work out 计算；想出；制定
refer to 查阅；提出；指的是
hand in 上交
spend time (in) doing sth. 花费时间做某事
go through 浏览；翻阅；通过
on holiday 在度假
take photos of 照相
be afraid of 害怕（担心会出现某种情况）
with a look of fright 面带恐惧的表情
be interested in 对......感兴趣
look around四周张望
send sb. to do 派遣某人......
even if 尽管
meet with(=come into)偶然碰到
may have done 某事可能已经做了（或发生）
reach outfor 伸出.......去.......
not all 不是所有
spoken language 口语
close to 靠近
be likely to 有可能.......
introduce sth. to sb. 向某人介绍.......
notnor既不......也不......
shake hands with(=shake ones hand)与某人握手
all kinds of 多种多样的......
be similar to 与......相似
at ease 安逸
up and down 上下
protect sb from V-ing/sth 从......保护某人
with your hands a little open 手微微张开
be willing to愿意去做......
look sb. in the eye 正视/直视某人
take action 采取行动
watch out 小心