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until和till这两个单词
until和till这两个单词,他们有什么联系,又有什么区别呢?!请说明,并举例 !1楼
[思路分析]
until和till两者都可作介词、连词,一般情况下可以互换使用。用于肯定句时,主句的动词只用延续性的,它所表示的动作一直延续到till或until表示的时间为止,意为“直到……为止”;用于否定句时,主句的动词一般是非延续性的,也可以是延续性的,它所表示的动作直到till或until所表示的时间才发生,意为“直到……(才)”。如:
She watched TV until / till her mother came back.
她看电视直到她母亲回来。(看电视的动作延续到母亲回来才结束)
具体区别解答如下:
[解题过程]
如果要放在句首,只能用until而不能用till,如:
误:Till I finished my homework, mother didn”t let me out.
正:Until I finished my homework, mother didn”t let me out.
直到我做完家庭作业妈妈才准我出去。
强调结构中也常常出现not until结构,常见句型为:It is / was not until…that。如下面这个句子:
She didn”t find me until I called her from behind.
直到我从后面叫她之后,她才发现了我。
改为强调结构:It was not until I called her from behind that she found me.
在强调句型中,not until置于句首构成倒装句以及until放在句首时,均不能用till替换until。例如:
It was not until 1920 that regular radio broadcast began.
直到1920年才开始有定期的无线电广播。
Not until 12 o”clock last night did Tom come back.(倒装句)
昨晚直到十二点汤姆才回来。
Until I was 20 I had never been away from my hometown.
我二十岁以前,从未离开过家乡。
until和till两者都可作介词、连词,一般情况下可以互换使用。用于肯定句时,主句的动词只用延续性的,它所表示的动作一直延续到till或until表示的时间为止,意为“直到……为止”;用于否定句时,主句的动词一般是非延续性的,也可以是延续性的,它所表示的动作直到till或until所表示的时间才发生,意为“直到……(才)”。如:
She watched TV until / till her mother came back.
她看电视直到她母亲回来。(看电视的动作延续到母亲回来才结束)
具体区别解答如下:
[解题过程]
如果要放在句首,只能用until而不能用till,如:
误:Till I finished my homework, mother didn”t let me out.
正:Until I finished my homework, mother didn”t let me out.
直到我做完家庭作业妈妈才准我出去。
强调结构中也常常出现not until结构,常见句型为:It is / was not until…that。如下面这个句子:
She didn”t find me until I called her from behind.
直到我从后面叫她之后,她才发现了我。
改为强调结构:It was not until I called her from behind that she found me.
在强调句型中,not until置于句首构成倒装句以及until放在句首时,均不能用till替换until。例如:
It was not until 1920 that regular radio broadcast began.
直到1920年才开始有定期的无线电广播。
Not until 12 o”clock last night did Tom come back.(倒装句)
昨晚直到十二点汤姆才回来。
Until I was 20 I had never been away from my hometown.
我二十岁以前,从未离开过家乡。
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