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‘if ’虚拟条件句的结构
通常有三种情况: ①与现在事实相反的假设 ②与过去事实相反的假设 ③与将来事实可能相反的假设
与现在相反
条件从句
条件从句的谓语形式 主句的谓语形式
与现在相反
If I (you, he/she, they, should/would/could/
we )+动词过去式
might+动词原形
1.If the teacher asked me to solve the problem next time, I could try my best.
2.If he should fail in the experiment this time, he
would try again.
3.If we were to panic, we would not be able to help.
swim, I w__o_u_ld__n_o_t _h_a_ve__b_e_en
(not be) trapped in this island.
PRACTICE 2: Fill in the blanks.
1. If Tom _h_a_d__b_e_en_ (be) more careful in the exam, he _w_o_u_l_d_h_a_v_e__p_a_s_se_d_ (pass) it already.
C.didn’t take
D.hadn’t taken
3. Simon looks as though he never ___ a square meal(吃得饱), though his parents feed him very well. A. get B. getting C. got D. should get
I would
take them to the museum. teach them how to give first aid.
DISCUSS
1、If I _w_e_r_e_ a teacher, I… 2、If I had a lot of money now, I…
PRACTICE 1: Fill in the blanks.
C. would miss
D. missed
2.—It was the drug,not the disease,that killed the boy.
—He would be still alive today if he ________ that drug.
A.not take
B.shouldn’t have taken
4. He is talking so much about America as if he ___ there. A. had been B. were C. was D. been
5. – Have you ever been to Beijing?
-- No, but I wish I ___.
If he_h_a_d_d_r_iv_e_n_(drive)more carefully,he_w__o_u_ld_n_o_t_h_a_v_e__h_a_d_ (not have) the car accident yesterday.
If I _h_a_d__le__a_r_n_t (learn)how to
I_w__o_u_ld__tr_a_v_el (travel )around the world.
If it were (be)fine now, I would go (go)shopping.
If I _w_e_re_a teacher, I….
If I were a teacher,
not let them do so much homework.
PRACTICE 3: Fill in the blanks
a. If there s_h_o_u_l_d__b_e (be) no natural resource any more, we s_h_o_u_l_d__m_a_k_e_ (make) use of nuclear power .
b. What _w_o_u_l_d_h_a_p_p__en_ (happen) if you _sh__o_u_ld__g_e_t_u_p_ (get up) too late tomorrow?
C.should fall
D.were to fall
8.If it ________ so hard,we’d go to town.
A.isn’t raining
+would /could/ might +do (将来不大可能实现的愿望 )
3 as if / as though
did 与现在事实相反
had done 与过去事实 相反或想象的事物
1.Alan ___ the party if he had gone to London.
A. would have missed B. had missed
I wish every day were my birthday.
I wish / wished I hadn’t eaten so much watermelon.
I wish it would rain tomorrow.
对比:
2
wish
+ did(与现在事实相反 ) + had done(与过去事实相反)
A. have B. will C. do D. had
6.When a pencil is partly in a glass of
water, it looks as if it ____.
A. breaks
B. has broken
C. were broken D. had been broken
If you had got up earlier, you could have caught the
train. 如果你早一点起床,就会赶上火车的。
If I __h_a_d__h_a_d____(have) time last night, Iw_o_u_l_d_h_a_v_e__g_o_n_e (go) to see the film with you .
与过去相反
条件从句
条件从句的谓语形式 主句的谓语形式
与过去相反
If I (you, he/she,
should/would/could/
they, we )+had +过去 might+ have+过去分
terday, I would have seen him. 如果我昨天来,就会看见他了。
3
wish
In Subjunctive mood
+ did (与现在事实相反 )
wish
+ had done (与过去事实相反)
+would /could/ might +do (将来不大可能实现的愿望 )
I wish I were as tall as you.
I wish I were a bird.
3. If the policeman _w_e_r_e_n_o_t_ (be not) in that room, it _c_o_u_ld__b_e_ (be) very dangerous.
4. If I w__e_r_e (be) in your position, I w__o_u_l_d_a_s_k_ (ask) for teacher’s help.
If I won (win) the lottery, I _w_o_u_ld__b_u_y (buy) an expensive car.
If I had a lot of money,
I would buy a villa.
If I__h_a_d___(have) a lot of money now,
7.It is hard for me to imagine what I would be doing today if I ________ in love,at the age of seven,with the Melinda Cox Library in
my hometown.
A.wouldn’t have fallen B.had not fallen
与将来相反
条件从句 条件从句的谓语形式
主语的谓语形式
与将来相反 If I (you, he/she, they, we )+动词过去式
should/would/could/ might+动词原形
If I (you, he/she, they, we )+should+动词原形
If I (you, he/she, they, we )+were to+动词原形
例: If I were a teacher, I would be strict with my students.
If I knew Bill’s phone number, I would call him.
中奖 ¥80,000,000
If I won the lottery,
I would…
2. If you _h_a_d__g_o_t (get) up earlier, you w__o_u_ld__h_a_v_e__ca_u__g_h_t (catch) the first train.
3. If I h_a_d__m__e_t (meet) you yesterday, we _w_o_u_l_d__h_a_v_e_g_o_n_e(go) to the concert together.