初中英语中考考点之主将从现ppt课件
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主将从现情况小结主将从现问题是中考考点之一。
它是指在时间状语从句和条件状语从句中,如果主句是一般将来时,从句用一般现在时替代一般将来时。
常见的有以下三种情况:一、条件状语从句、时间状语从句的主句是一般将来时,那么从句常常用一般现在时。
如:When I grow up, I’ll be a nurse and look after patients.我长大后要当一名护士,照顾病人。
If tomorrow is rainy,we won't go.二、如果主句是祈使句,那么从句通常要用一般现在时。
如:Don’t laugh at me when I make a mistake.我犯错误的时候不要笑话我。
三、如果主句是含有情态动词的一般现在时,根据需要从句多用一般现在时。
如:You should be quiet when you are in the reading room.在阅览室时应保持安静。
四、as soon asAs soon as she gets here, I’ll tell her about it.五.UnlessI will not go there unless I am free that day.六、untilI won’t go out until the rain stops.练习单项选择(中考题):1 If he ___ harder , he will catch up with us soon.(04 北京)A studyB studiesC will studyD studied2 I will go swimming with you if I ___ free tomorrow.(04哈尔滨)A will beB shall beC amD was3 If you ___ a chance to study in a foreign country ,just take it .(04 苏州)A gettingB had gotC will getD get4 Don’t leave until he ___ back.()A have comeB comesC will comeD came5 “Shall we have the volleyball match tomorrow?”“ Oh, it will be put off if it ____.(04 黄冈)A snowsB is snowingC snowedD will snow6 -Tell him about the news when he ____ ,John. -Yes, I will.(04 宁波)A comesB will comeC wouldD is coming7 Tomorrow we will go to the city park____ it is sunny.(05 安徽)A as soon asB whenC ifD as8 Please don’t leave until your teacher ___back.(05河南)A will comeB cameC comesD is coming9 I want to know if there ___a sports meeting next month . If they ___ it , I must get ready for it。
八年级上语法专项----主将从现一、如果主句是将来时或表示将来含义时,那么条件和时间状语从句多用一般现在时如:When I grow up, I will be a nurse and look after patients/ I want to be a nurse and look after patients.我长大后要当一名护士,照顾病人。
二、如果主句是祈使句,那么从句通常要用一般现在时如:Don’t laugh at me when I make a mistake.我犯错误的时候不要笑话我。
三、如果主句是含有情态动词的一般现在时,根据需要从句多用一般现在时如:You should be quiet when you are in the reading room在阅览室时应保持安静。
四、主将从现说的是在含有时间状语从句和条件状语从句的主从复合句中,如果主句的时态是一般将来时,那么从句要用一般现在时。
例如:I will tell him about it when he comes.If it is fine tomorrow, we will go outing.五、如果主句的时态是过去将来时,那么从句要用一般过去时。
例如:He said that he would have another try if he had the chance.I knew he could help me if he was free the next day.主要标志有:if 、unless 、until、when 、as soon as等注意if 条件句的时态搭配:1.if从句用一般现在时,主句用一般将来时If he runs he’ll get there in time. 如果他用跑的,他就会及时赶到那儿。
The cat will scratch you if you pull her tail. 如果你拉猫的尾巴,它就会抓你。