高三英語Astronomy教案
break up打碎；拆散；(會議)結束；分裂(解體) break off (使)停止；中斷；折斷
break into sth. 強行進入某處 break one’ s word/promise食言；說話不算數
[練習] 用break短語填空。
1). a terrible tsunami _______ _______ in the southeastern countries of asia at christmas, .
2). when do you _______ _______ for christmas?
3). negotiations between the two sides have _______ _______.
4). his house was _______ _______ last week.
keys: 1). broke out 2). break up 3). broken down 4). broken into
8. watch out 密切注視；當心；提防
[典例]
watch out! there’ s a car coming. 小心! 汽車來了。
[重點用法]
watch out for sb/sth 警惕或注意某人/事物 watch over 保護；照看
[練習] 用watch短語填空。
1). there must have been an angel _______ _______ me that day.
2). what problems should i _______ _______ _______ when buying an old house?
3). you’ ll become an alcoholic if you don’ t _______ _______.
keys: 1). watching over 2). watch out for 3). watch out
ⅴ.重點句子（旨在提供句子結構等所需材料）
1. it exploded loudly with fire and rock, which were in time to produce the water vapour, carbon dioxide, oxygen, nitrogen and other gases, which were to make the earth’ s atmosphere. 它(地球)巨大的爆炸噴出了烈火與巖石。最終產生了水蒸氣、二氧化碳、氧、氮和其他多種氣體，從而形成了地球的大氣層。
[解釋]“be + 不定式”結構通常用來表示“按計劃或安排將要做的事情”，或表示上級對下級、父母對子女下命令，“應該做某事”或表示某事“將必然發生”。例如：
1). here is a message for you from your head teacher: you are to go to her office after class. 你的班主任給你一個口信，要你下課后到她的辦公室去。
2). the worst is still to come. 更糟糕的事情還會發生。
3). we’ ll hold a meeting tomorrow. = we are to hold a meeting tomorrow. = a meeting is to be held tomorrow. 我們明天將開會。
4). the train is to arrive in beijing at 10: 25 am. 這趟火車將于上午10: 25到達北京。
[練習] 完成句子或翻譯。
1). here is a message for you from your head teacher: you ______ ______ ______ to her office after class. (你的班主任給你一個口信，要你下課后到她的辦公室去。)
2). the worst is still ______ ______ (come).
3). we’ ll hold a meeting tomorrow.
= we ______ ______ ______ a meeting tomorrow. = a meeting is ______ ______ ______ tomorrow.
4). 這趟火車將于上午10：25到達北京。
________________________________________________________________________________________
keys: 1). are to go 2). to come 3). are to hold; to be held