VOA慢速英语:World Leaders Urged to Meet Development Goals by 2015

1.On Monday, United Nations Secretary-General Ban Ki-moon opened a three-day summit meeting of one hundred forty presidents and prime ministers.

three-day复合词

由两个或更多的词合成一个词的现象，叫复合词，又称合成词（词与词之间可以有连字符）；其中以复合名词最多，其次是复合形容词，复合动词、介词、副词、数词等也不少。
a．名词＋名词：bookshop ／store ／seller ／ mark，sunlight ／shine ／glasses，French ／Englishman，policeman ／woman，volley ／basket ／base ／ football，penfriend，grandfather ／mother ／son ／ daughter ／parent（s）／children，schoolboy ／girl／ bag ／yard，headache ／master ／teacher，moon- cake ／light，team ／house ／homework，workbook ／place ／shop，newspaper，motorbike ／car， birthday，bed ／class ／bathroom，handbag，gate- keeper ／man，pencil-box，day ／lunchtime， lifeboat ／time，postcard ／man ／office，seafood， weekday ／end，class ／work ／mate，northeast ／ west，railway，southeast ／west，textbook，teapot， shellfish，earthquake，cup ／keyboard，doorbell， fireplace，farmland，hometown，salesgirl，necklace，wardrobe，spaceship，etc．

b．形容词＋名词：loudspeaker，goodbye， midnight ／day，blackboard，Mid-autumn，software，mainland．．．

c．动名词＋名词：sitting ／waiting-room．．．

d．动词＋名词：playground ／house， watchtower，chopsticks，washroom，checkout， breakfast．．．

e．名词＋动名词：handwriting，homecooking，thanksgiving，roller-skating．．．

2.Hafez Ghanem said there is no cause to worry, unless there is another "shock to supply."

unless

if和unless都是引导条件状语从句的连词，应尤其注意unless的用法，因为它表示反面条件，相当于if not“如果不”、“除非”。如：
In debating, one must correct the opponent’s facts, deny the relevance of his proof, or deny that what he presents as proof, if relevant, is sufficient.