高中英语虚拟语气精讲PPT精选文档

should/would/could/ might +do
表示与将来事实相反，条件状语从句中的谓语动 词一般过去时或should(were to) + 动词原形，而 主句中的谓语动词则用would / should/ could might + 动词原形。
If it should fail, I would try again.
如If 果it s明ho天ul下d s雪no，w我tom们o就rro不w出, w去e 了wo。uldn’t go out.
Should it snow tomorrow, …
4.If it ___r_a_i_n_e_d_/__s_h_o_u_l_d__rain/ w_e_r_e__t_o__r_ain(rain) tomorrow, we w_o__u_ld__n_o_t__g_o__o_u_t_(not gBaidu Nhomakorabea out).
more careful,
the mall would
not be on fire now.
If you had taken your father’ advice,
You wouldn’t have trapped in the traffic jam now.
与将来事实相反
虚拟条件句
主句
did/ were should do were to do
2.I _m_i_g_h_t_h_a_v_e_g_i_v_e_n_ (give) you more help, but I was too busy.
3.A man who stopped drinking _w_o_u_l_d_b_e__ (be) dead in seven days. 4.But for water, it _w_o_u_l_d_b_e_ (be) impossible to live in the desert.
A. 虚拟语气在条 件状语从句中的 应用
条件句中虚拟语气的考点 1、基本用法； 2、 混合条件句； 3、虚拟条件句的省略和倒装 4、含蓄条件句;
主从句的谓语形式
时间 If 从句的谓语形式 主句的谓语形式
现在 过去 将来
did / were
would/could/should/ might +V.(原)
要是失败了，我会再试一次。
明天要是周日的话，我们就不参加考 试了。
If it were Sunday tomorrow, we wouldn’t have an exam.
主从句的谓语形式
时间 If 从句的谓语形式 主句的谓语形式
现在 过去 将来
did / were
would/could/should/ might +V.(原)
had done
would/could/should/ might+have+done.
1. did / were 2. should do 3. were to do
would/could/should/ might + V.(原)
与现在事实相反：
虚拟条件句
主句
did be---were
should/would/could/mig ht + do
Eg. Without /But for your help, we would not have made such rapid progress.
1.I was ill that day. 0therwise, I _w_o_u__ld__h_a_v_e__ta_k_e_n__ (take ) part in the sports meet.
This same thing, happening in wartime, would lead to a disaster. (条件暗含在分词短语happening in wartime 中) He studied hard at high school, or he couldn’t have entered Beijing University. (暗含条件是连词or)
如If果I w我er是e 你yo，u, 我I w会ou再ld试try一it次ag。ain. Were I you, …
如If 果he他ha昨d b天ee在n 那the儿re的ye话ste，rd他ay就, h会e w看o那uld 部ha电ve影se了en。the film.
Had he been there yesterday, …
The Subjunctive Mood
虚拟语气
英语动词有 三 种语气
陈述语气 祈使语气 虚拟语气
用来表示说的话不是事实，或者是不太可能发生的情况，而 是一种愿望，建议，假设的语气叫虚拟语气。
虚拟语气的应用
A. 虚拟语气在条件状语从句中的 应用
B. 虚拟语气在某些从句中的应用 C. 虚拟语气在某些句型中的应用
had done
would/could/should/ might+have+done.
1. did / were 2. should do 3. were to do
would/could/should/ might + V.(原)
If虚拟句的省略和倒装
如果条件状语中有were, had, should时, 可以省略 if倒装成：Were / Should / Had +主+其他
5._W ___e_r_e(be) I in good health, I w_o__u_ld_/_s_h_o_u__ld__go(go) with you tomorrow.
含蓄条件句
有时 假设的情况并不以条件从句表示 出来，而是隐含在某些词或短语中，如， otherwise, without, but for等，或者从上 下文中表示出来，这种情况叫含蓄条件 句，主句要用虚拟语气。
1) If he has time,he will go shopping tonight.
与事实相反！
2) If I had time,I would visit you.
与过去事实相反
虚拟条件句
主句
had done
should/would/might/co uld +have +done
If the staff had been