上几期学习了英语语法：短语look around，look back的用法、短语look up，look up and down的用法、短语mess up，mix up的用法、短语pass by，pass down的用法
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动词短语是由动词和介词、副词、名词等构成的，在句中作谓语。
277.pay off还清
用法：pay off后一般接表示钱款、贷款的名词。
例句：It may take thirty years for them to pay off the mortgage. (12月四级)
他们可能要过三十年才能把房贷还清。
结构分析：It是形式主语，may take是谓语， thirty years是宾语，for them to pay off the mortgage是真正的主语，其中for them是逻辑主语。
278.pay back偿还
用法：pay back还可以表示“报复”，其后可以接宾语，也可以不接宾语。
例句：They are often unable to pay back in time.
他们往往无法及时偿还。
279.point out指出
用法：point out可以后接表示人或物的宾语，也可以后接that从句。
例句：He wants to point out mistakes that young artists commonly make. (托福)
他想指出年轻艺术家们通常会犯的错误。
280.pull down拆毁
用法：pull down也可以表示“把……拉下，使身体虚弱”，其后的宾语如果是人称代词，要放在down的前面。
例句：In ancient times, it was illegal to pull down the temple.
在古代，拆毁寺庙是违法的。
0129作业动词短语：push over推倒用法：push over既可以用于主动语态，也可以用于被动语态，即be pushed over。
例句：We can see from thevideo that an old man was pushed over.
1.句子结构、时态等分析；
2.将英文译成中文。
英语外刊，精读练习：The final minutes of interaction between the pilot of the helicopter carrying Kobe Bryant and air traffic controllers did not indicate any cause for alarm – until the communication suddenly ceased.【USA TODAY】
