if条件状语从句-语法PPT幻灯片课件
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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）
3.时态：if一般现在时，+主句一般将来时或 （can/ may /must +v.)
10
2
If 条件状语从句（1） 句型结构
祈使句+if条件状语从句 if条件状语从句，+祈使句（从句后加逗号）
时态
if条件状语从句要用一般现在时。
3
Let’s sing the song in Chinese:
If you are happy
4
What will you do if you’re happy?
(not wait ) for him.
3. If you _b_u_y_ (buy) a new camera, __g_et_ (get)
a good one.
4. If the light _d_o_e_s_n_’t__co_m__e_ (not come) on,
_w__a_it (wait) for one minute.
If从句（条件状语从句）
1
Complete the sentences with the correct form of the words.
1.If you __li_s_te_n__(listen) to the music, _b_u_y__
(buy) a CD.
2. If he___is___ (be) late for school,d_o_n_’t_w__ait
If I’m happy, I will _cl_a_p_m__y_h_a_n_d_s_. If I’m happy, I will _s_ta_m__p_m__y_f_e_e_t . If I’m happy, I will _n_o_d_m__y_h_e_a_d__. If I’m happy, I will __w_i_n_k_m__y__e_y_e_s_.
(not,send) her away 10.He w__il_l _w_a_t_c_h_(watch) TV ,if he ___is___(be) free.
11
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!
12
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.
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_
_I’_ll_p_l_a_y_b_a_s_k_e_t_b_a_ll_.
8
practice
If you are free this weekend, what will you do ?
sleep
If I am free ,… watch TV
play computer games
9
if条件状语从句(2)
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 .
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。
If I’m late, _I _w_i_ll__s_a_y_s__o_r_ry____.
7
If it rains tomorrow, I_w_i_wenku.baidu.com_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,
5
Look and say
If I’m hungry,
I will_e_a_t_s_o_m__e__fo_o_d__.
If I’m tired,
I will__h_a_v_e_a__r_e_s_t __.
6
Look and say
If I’m ill, _I_w_i_l_l _s_e_e__a_d_o__c_to__r_.
3.时态：if一般现在时，+主句一般将来时或 （can/ may /must +v.)
10
2
If 条件状语从句（1） 句型结构
祈使句+if条件状语从句 if条件状语从句，+祈使句（从句后加逗号）
时态
if条件状语从句要用一般现在时。
3
Let’s sing the song in Chinese:
If you are happy
4
What will you do if you’re happy?
(not wait ) for him.
3. If you _b_u_y_ (buy) a new camera, __g_et_ (get)
a good one.
4. If the light _d_o_e_s_n_’t__co_m__e_ (not come) on,
_w__a_it (wait) for one minute.
If从句（条件状语从句）
1
Complete the sentences with the correct form of the words.
1.If you __li_s_te_n__(listen) to the music, _b_u_y__
(buy) a CD.
2. If he___is___ (be) late for school,d_o_n_’t_w__ait
If I’m happy, I will _cl_a_p_m__y_h_a_n_d_s_. If I’m happy, I will _s_ta_m__p_m__y_f_e_e_t . If I’m happy, I will _n_o_d_m__y_h_e_a_d__. If I’m happy, I will __w_i_n_k_m__y__e_y_e_s_.
(not,send) her away 10.He w__il_l _w_a_t_c_h_(watch) TV ,if he ___is___(be) free.
11
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!
12
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.
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_
_I’_ll_p_l_a_y_b_a_s_k_e_t_b_a_ll_.
8
practice
If you are free this weekend, what will you do ?
sleep
If I am free ,… watch TV
play computer games
9
if条件状语从句(2)
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 .
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。
If I’m late, _I _w_i_ll__s_a_y_s__o_r_ry____.
7
If it rains tomorrow, I_w_i_wenku.baidu.com_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,
5
Look and say
If I’m hungry,
I will_e_a_t_s_o_m__e__fo_o_d__.
If I’m tired,
I will__h_a_v_e_a__r_e_s_t __.
6
Look and say
If I’m ill, _I_w_i_l_l _s_e_e__a_d_o__c_to__r_.