高中英语状语从句课件

状语从句Р7. 结果状语从句Р8. 方式状语从句Р9. 比较状语从句Р1) 常用连词如下:as, when, while, till / until, not …till / until, before, since, after等。Р1. 时间状语从句Рe.g. I won’t know where he is until I get a letter from him. Till 只能用于肯定句中,until既可以用于肯定句,也可以用于否定句。РIt’s/will be +一段时间 before+一般现在时表示过了多久才?It’s/will (not) be +一段时间 before+一般现在时表示没过多久就?it ’s been+一段时间 since +一般过去时РIt will be a long time before we meet again.?It has been 20 years since we first saw each other.Р2) 一些表示时间的名词词组也可引导时间状语从句。如:the moment, the minute, (一…就)next time(下次), every/each time (每次)。?e.g. The moment es, I will tell him.Р3).介词也可以引导状语从句。如since, before, after。?I would like to invite you to do several exercise ing to our key points.Р4) as soon as, immediately, directly, instantly 等副词也可引导状语从句。表示“一……就……”。?As soon as I reach home, I will tell him the news.