初中英语条件状语从句(共42张PPT)

• 3. 如果主句是祈使句，从句同样要用一 般现在时。
Don’t go and play football if you don’t finish your homework.
Please call me if he comes next Sunday.
Revision
if条件状语从句结构及时态
6.I want to know if he __w_i_ll_c_o_m_e_(come) tomorrow, if he __c_o_m_e_s_(come), I ___w__il_l g_i_v_e_(give) the massage to him.
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____.
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 __.
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_.
She is going to walk to school.
She will be late.
If she w__a_lk__s to school, she _w_i_ll__ _b_e_late.
If 引导条件状语从句
定义：if “如果, 假如” 它引导的句子表示某事发生所需的
条件，即“在…条件下，某事才能发生”，在句子中充当状 语，因此称之为条件状语从句。（ If引导的条件状语从句表 示假如有从句的动作发生，就会有主句动作的发生 ）
1. 如果主句是一般将来时，从句则用一般现在时。
If it rains（从句）， I will stay at home. I’ll go with you if you don’t want to go alone（从句）.
2.如果主句含有must, may, can 等情态动词，从句也要用
一般现在时。
If you are happy and you know it wink your eye
If you are happy, what will you do?
If I am happy, I will smile.
If you become sad, what will you do? If I become sad, I will cry.
6 I __w_i_ll_s_t_a_y_(stay) at home,If it __r_a_in_s_____( rain). 7.If it _d_o_e_s_n__’t_r_a_in__(not,rain) ,I __w_i_ll_g_o___( go) out. 8. we _w_i_ll_p_l_a_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__ (not,send) her away
10.Hew_il_l_w_a_t_c_h__(watch) TV ,if he __is____(be) free.
Fill in the blankets with the proper form
1.If It__ra_i_n_s_ (rain) tomorrow, I _w_il_l _st_a_y(stay) at home.
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_.
practice
If you are free this weekend, what will you do ?
sleep
If I am free ,… watch TV
Please call me if he comes next Sunday.
练一练：
1。如果她早点儿起床，就有时间在家里吃早餐 If she_g_e_t_s _u_p__a little earlier, she’ll have time to eat breakfast at home. 2。如果你参加聚会，你将会过得很开心。 If you_jo_i_n_ the party ,you__w_i_ll_h_av_e__ a great time. 3。如果明天下雨，我们将不去野餐 If it r_a_in_s_tomorrow, we _w_o_n’_t_g_o_ for a picnic. 4。如果你经常听英文歌，你将会喜欢英语 If you often _l_is_te_n_t_o_English songs, you_w_i_ll _lik_e_English.
If it rains（从句）， I will stay at home. I’ll go with you if you don’t want to go alone（从句）.
2.如果主句含有must, may, can 等情态动词，从句也要用
一般现在时。 If you drive too fast, you may have an accident. You must stop if the traffic is red. If you finish the homework， you can go home． 如果你作业做完了就可以回家了。 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。
If条件句：条件句用于陈述语气，表示假设的情况可能发生，
其中 if 是“如果”的意思。
主句一般将来时 ，从句用一般现在时。
构 成
条件从句
主句
时 态
If＋一般现在时 主语＋shall/will+动词原形
例 句
If he comes,
he will take us to the zoo.
用法：
1. 如果主句是一般将来时，从句则用一般现在时。
2.You may _p_a_s_s__ (pass) the exam if yous_tu_d_y (study) hard.
3. If you want to record, __p_r_e_s_s__(press) the red light.
1.I’m sure if he ___g_o_es(go) to the party, he__w_il_l _h_av_e_ (have) a great time.
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_i_ll_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_v_e (not,believe) you.
2.If the rain __s_t_o_p_s_(stop) tonight, we will go to the cinema.
3.I’ll buy a computer if I __h_a_v_e_(have) enough money.
4.You __w__on_’_t_g_e_t (not get) nervous if you __d_o__(do ) enough exercise.
She is doing her homework.
She gets good grades.
If you are hard-working, you will get good grades.
If you play computer games on weekdays ,
you’ll be very tired in class your parents will be sad. you won’t get good gyraoudrese.yes will be poor
Adverbial Clause of Condition 条件状语从句
If you are happy
If you are happy and you know it clap your hands If you are happy and you know it clap your hands If you are happy and you know it never be afraid to show it If you are happy and you know it clap your hands If you are happy and you know it stomp your feet. If you are happy and you know it stomp your feet. If you are happy and you know it never be afraid to show it If you are happy and you know it stomp your feet If you are happy and you know it wink your eye If you are happy and you know it wink your eye If you are happy and you know it never be afraid to show it
• If you want to get good marks, • don’t _c_o_p_y_y_o_ur_h_o_m. ework.
talk in the class cheat in the exams
If you have enough pocket money, what will you buy?
If you drive too fast, you may have an accident. You must stop if the traffic is red.
3. 如果主句是祈使句，从句同样要用一般现在时。
Don’t go and play football if you don’t finish your homework.
位置：从句可放在主句之前或之后，但是放在主句之前须有
逗号隔开
eFra Baidu bibliotek:如果我有足够的钱，我就去环游世界
If I have enough money, I will travel around the world =I will travel around the world if I have enough money
play computer games
If you want to get good marks, do what? Don’t do what?
• If you want to get good marks, _s_tu_d_y_h_a_rd___.
listen to teachers carefully. do homework by yourself.