如果If 从句用were to do, 主句是不可能用陈述语气will do形式的。if 从句用should do, 则主句可以用陈述语气、虚拟语气和祈使语气。例如:Should she fail to come on time, 1) we will leave with out her. 2) we would leave without her. 3) leave without her.
回答于 2020-12-01 16:30
过去完成时表示过去的过去,即有一个过去时间作为参照点。until表示一个状态或持续的动作的结束时间点。某人没有被逮住是一个过去状态,这个状态在until表示的那个时间结束。说话人关心的是这个状态的持续时间之长。过去的状态用一般过去时表示。用过去完成时没有道理。如果说话人不是强调这个状态持续时间之长,而只是想表...
回答于 2020-12-01 16:26
这个句子本身就有问题。while引导时间状语从句,从句谓语动词应该为持续性动词,用find是错误的。分析这种错误的句子是没有意义的。句子改为:Hold on. Let me find/get a pen.
回答于 2020-12-01 15:42
that从句不能作介词宾语。所以当insist on需要后接that从句时,只能省略介词。insist重新解释为及物动词。
回答于 2020-12-01 15:37
我的看法与以上二位老师不同。我认为when从句是状语从句,不是定语从句。1 to think 为惯用法。《韦氏高阶》to think:— used to express surprise or shocTo think (that) he lied to you!To think, all we needed to do was to wait a few more days.2 when可以引导让步状语从句。《韦氏高阶》when: conjunction 3) in spi...
回答于 2020-12-01 15:33
If you are a loner, you'd better get yourself some friends, or else risk losing precious brain cells. or else为并列连词,这里应该加上you will, 即:If you are a loner, you'd better get yourself some friends, or else you will risk losing precious brain cells. 这样,or else并列二个分句。
回答于 2020-12-01 14:20
Teaching is as much an art as it is a science.= Teaching is not only a science but also an art. = Teaching is an art as well as (it is) a science. as...as...比较结构中,第二个as主流语法都认为是连词。much在这里为程度副词,意思为教学在多大程度上算是一门学科,那么它在同样的程度上也是一门艺术。
回答于 2020-11-30 20:26