Ⅰ.重点单词
1．chat vi.聊天；闲聊
chat about sth. 闲聊某事
chat with sb. 与某人聊天
chat with sb. about sth. 与某人聊某事
2．identity n．身份；个性
identical adj.相同的，一样的
identify vt.确定；辨别
identification n．身份证明
3．convenient adj.方便的；近便的
be convenient to sb.对某人方便
if it is convenient to sb.如果某人方便的话
be convenient for sth.近便的，容易到达的
It is convenient to do sth. 做某事方便
It is convenient for sb. to do sth.做某事对某人来说是方便的
convenience n. 方便；便利；厕所
for convenience 为了方便
at one's convenience 在某人方便时
at your earliest convenience 尽早
to one's convenience 对某人方便(合适)
It's a great convenience to do...做某事很方便
convenience food 方便食品
4．benefit n．益处 vt.使受益 vi.得益于
be of benefit (to sb.) (对某人)有益
for sb.'s benefit 为帮助某人；为某人的利益
A benefit(s) B A对B有益
A benefit(s) from/by B A从B中获益
beneficial adj. 有益的；有帮助的
be beneficial to... 对……有益
