2.With his help, I would have done the experiment well.
= If I had had his help , ….
1) If it hadn’t rained, we would have finished the work.
=__B_u_t_f_o_r_t_h_e_r_a_i_n__,we would…
Had I known about this computer program, a huge amount of time and energy_w__o_u_ld__h_a_v_e__b_e_e_n_s_a_v_e.d
②如果明天下雨,我们将不得不取消球赛。
Should it rain tomorrow, we would have to__c_a_n_c_e_l_t_h_e_m__a_t_c_h___.
虚拟语气 the subjunctive mood
动词 时间
从句
主句
与过去事 had+done
相反
would
should could
have+doneΒιβλιοθήκη mightwould
与现在事 实相反
did(be用were)should
could
+do
might
did(be用were)would
与将来事 should +do 实相反 were to+do
2) If I hadn’t been ill that day, I would have taken part in the sports meeting
= I was ill that day,_o_t_h_e_r_w_i_s_e__, I would have taken part in the sports meeting.