if条件句歌诀
❖ if条件句不一般,几个要点记心间。 ❖ 条件句放在前,逗号要放句中间。 ❖ 条件句表可能,主句多用将来时； ❖ 条件句表事实,主句常用现在时。 ❖ if条件句有特点,现在时把将来替； ❖ 这个规则要牢记!
1.If he__d_o_e_s_n_’t_d__o__ (not, do it ), I___w_i_ll_d_o____(do) it. 2.If you _a_r_e_ (be) late for school ,my teacher _w__il_l _b_e__(be) angry.
---I get thirsty when I run.
---If you take some water with you, you won’t get thirsty when you run.
I worry so much about my schoolwork.
---If you always work hard,
If从句（条件状语从句）
If 条件状语从句
句型结构
主句+if条件状语从句 if条件状语从句，+主句（从句后加逗号）
时态
if条件状语从句要用一般现时。
Look and say
If I’m ill, _I_w_i_l_l _s_e_e__a_d_o__c_to__r_.
If I’m late, _I _w_i_ll__s_a_y_s__o_r_ry____.
3.时态：if一般现在时，+主句一般将来时或 （can/ may /must +v.)
e.g.
1.If you don’t get up early, you will be late for school .你如
果不早点起床，上学就会迟到。
2. If I play games on it , it will go wrong .
If you don’t listen in class, you won’t understand what to do.
1) Eat some breakfast, or you’ll get hungry at school.
If you don’t eat some breakfast, you’ll get hungry atபைடு நூலகம்school.
you won’t worry about your
schoolwork.
You should work hard!
Unit 3 activity 1 Rewrite the sentences with if:
Listen in class, or you won’t understand what to do.
practice
If you are free this weekend, what will you do ?
sleep
If I am free ,… watch TV
play computer games
if条件状语从句(2)
句子特点： 1.if从句中用一般现在时，表示未来的一种条件， 从句中可以加时间状语。 2.当if表示未来的条件时，主句中用一般将来时。 句型结构： 主句+if条件状语从句 if条件状语从句，+主句（从句后加逗号）
(not,send) her away 10.He w__il_l _w_a_t_c_h_(watch) TV ,if he ___is___(be) free.
Giving suggestions:
---I’m always tired in the morning.
---If you go to bed early, you won’t be tired in the morning.
If it rains tomorrow, I_w_i_l_l _w_a_t_c_h__T_V__a_t_h__o_m__e. I won’t__p_la__y_b_a__s_k_e_t_b_a_ll_.
If it _d_o_e_s__n_’t__ra_i_n__ tomorrow,
_I’_ll_p_l_a_y_b_a_s_k_e_t_b_a_ll_.
3 If she__w__in_s___ (win) the prize ,we _w_i_ll_b_e__(be) happy. 4.If I __d_o_n_’t_e_a_t_ (not,eat )so much ,I _w__il_l _g_e_t__(get) thinner.
5.If you __te_l_l __(tell) them, they __w_o_n_’_t_b__e_li_e_ve_ (not,believe) you. 6 I __w_i_ll_s_t_a_y_(stay) at home,If it ___ra_i_n_s____( rain). 7.If it _d__o_e_s_n_’t_r_a_i_n_(not,rain) ,I __w__il_l _g_o__( go) out. 8. we _w__il_l _p_la_y___(play) football, If it is s_u__n_n_y____(sun) . 9.If she _b_e_c_o_m__e_s__(become) a star ,her parents __w_o_n_’_t_s_e_n__d_
如果我用它玩游戏，它就会坏掉。
3. If you finish the homework， you can go home． 如果你作业做完了就可以回家了。
4. If you want to lose weight you must/should eat less bread. 如果你想减肥，你必须少吃面包。 5.If you heat ice it turns to water. (也可用will turn) 如果把冰加热，它就会化成水。
2) Hurry up! We’ll be late!
If you don’t hurry up, we’ll be late.