概要： I watched TV until ( till ) 10 o\'clock . 我看电视一直到10点钟。 如果主句的谓语动词是瞬间动词，则主句必须用否定式，译为“直到……才”，即：主句 ( 用否定式 ) + until ( till ) 时间状语或状语从句。例如： I didn\'t go to bed until ( till ) he came back . 直到他回来我才睡觉。 I didn\'t go to bed until ( till ) 10 o\'clock last night . 昨晚我直到10点钟才睡觉。 注意：用在句首时，一般只用 until 而不能用 till。例如： Until I finished my homework , I didn\'t go to bed . 直到做完家庭作业我才睡觉。 Not + until 时间状语或状语从句 + 助动词 ( 常用 did ) + 主语 + 动词原形 ( 注：not 放
高二英语第十八单元Mainly Revision ( 阶段复习 ),标签：高二英语选修7教案,高二英语下册教案,http://www.67jx.comI watched TV until ( till ) 10 o\'clock . 我看电视一直到10点钟。
如果主句的谓语动词是瞬间动词，则主句必须用否定式，译为“直到……才”，即：主句 ( 用否定式 ) + until ( till ) 时间状语或状语从句。例如：
I didn\'t go to bed until ( till ) he came back . 直到他回来我才睡觉。
I didn\'t go to bed until ( till ) 10 o\'clock last night . 昨晚我直到10点钟才睡觉。
注意：用在句首时，一般只用 until 而不能用 till。例如：
Until I finished my homework , I didn\'t go to bed . 直到做完家庭作业我才睡觉。
Not + until 时间状语或状语从句 + 助动词 ( 常用 did ) + 主语 + 动词原形 ( 注：not 放在句首，故用部分倒装 ) 译为：“直到……才”。可以简化成：Not until…did + 主语。例如：
Not until I finished my homework did I go to bed last night .
I didn\'t go to bed until ( till ) 10 o\'clock last night . 昨晚我直到10点钟才睡觉。
注意：用在句首时，一般只用 until 而不能用 till。例如：
Until I finished my homework , I didn\'t go to bed . 直到做完家庭作业我才睡觉。
Not + until 时间状语或状语从句 + 助动词 ( 常用 did ) + 主语 + 动词原形 ( 注：not 放在句首，故用部分倒装 ) 译为：“直到……才”。可以简化成：Not until…did + 主语。
Not until I finished my homework did I go to bed last night . 昨晚直到做完家庭作业我才睡觉。
Not until last week did he realize he was wrong . 直到上星期他才认识到他是错误的。
It was not + until 时间状语或状语从句 + that + 主句
( 注：此句型实际上是强调 not until 状语或状语从句。同学们应该记住：无论是强调时间、地点或原因状语，一般只用 that。这一点与定语从句不同，且此句型是陈述句语序，不用倒装。 ) 可以简化成句型：It was not until… + that . 例如：
It was not until I finished my homework that I went to bed . 是在做完作业之后我才去睡觉的。
It was not until last week that he realized he was wrong . 一直到上个星期他才认识到他是错误的。
【针对练习】
1 . It was not ____ she took off her glasses ____ I realized she was a famous film star .
A . when ; that B . until ; that C . until ; when D . when ; then
2 . Not until the early years of 19th century ____ what heat is .
A . man did know B . man knew C . didn\'t man know D . did man know
3 . Not until I began to work ____ how much time I had wasted .
A . didn\'t I realize B . did I realize C . I didn\'t realize D . I realized
4 . Not until all the fish died in the river _____ how serious the pollution was .
A . did the villagers realize B . the villagers realized
C . the villagers did realize D . didn\'t the villagers realize
5 . It was not until 1920 ____ regular radio broadcast began .
A . while B . which C . that D . since
答案：BDBAC
二、学海导航
【学法指要】
单元重点词汇点拨
1.fly苍蝇
This kind of disease is caused by flies .
〖点拨〗fly作动词的常见搭配有：fly nonstop from Shanghai to New York从上海直飞纽约。fly a kite放风筝。fly from从……逃亡。fly at攻击（不用被动语态）。let fly (at) 射击
2. absence不在；缺席
His absence from school was caused by illness . 他缺课是因为生病。
〖点拨〗absence为不可数名词，但是，在表达“一次缺席或者不在”时是可数名词。如：He made up a wonderful story to explain his several absences .
He returned after an absence of twenty minutes .
注意：absence的形容词是absent 。常见搭配有：during one’s absence某人不在时。be absent from school ( work , home ) 没上学（不上班，不在家）。
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