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 out…for… 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……

not…nor…既不……也不……

shake hands with(=shake one’s 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

Unit5

provide sb. with…提供……

a bit 一会儿;一点儿

such as如……

a variety of 各种各样的……

charge…for…向……收费

be based on 以……为基础

not just 不仅仅

along with 连同……;伴随……

come to life 活跃起来

have sth done 使得……;让……被做

be named after 以……命名

be different from 与……不同

get close to 靠近

learn about(=learn of)学习;得知;听到

take an active part in 积极参与

face to face 面对面

try out 试验

large amounts of/a large amount of 大量(不可数)

point out 指出

at least 至少