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高考英语复习:not until 句型的强调句1、句型为:It is/ was not until + 被强调部分 + that + 其它部分 普通句:He didnt go to bed until/ till his wife came back. 强调句:It was not until his wife came back that he went to bed.2、注意:此句型只用until,不用till。但如果不是强调句型,till, until可通用;因为句型中It is/ was not 已经是否定句了,that后面的从句要用肯定句,切勿再用否定句了。谓语动词的强调1、It is/ was that 结构不能强调谓语,如果需要强调谓语时,用助动词do/ does或did。 Do sit down. 务必请坐。 He did write to you last week. 上周他确实给你写了信。 Do be careful when you cross the street. 过马路时,务必(千万)要小心啊!2、注意:此种强调只用do/ does和did ,没有别的形式;过去时用did ,后面的谓语动词用原形。