单词北师大高一英语模块2unit4单词与语法.ppt

summary a military base a scientific mind a scientific approach a nuclear war a new nuclear power plant marketing networks do a project on sth. make arrangements for sth It was arranged that lesson 3 summary the title of sth have any title to sth reach our destination the destination of study destination wedding exit from sp (entrance to) construction site dip in/into dip up/out keep sb on their toes toed cautiously into grammar 真实条件句的构成： “If + 从句主语 + 一般现在时，主句主语 + will/won’t + 动词原形” 1. if从句和主句都用一般现在时，表示客观真理或习惯和持续发生的事情。如： If the moon goes near the earth, the tide goes high. 如果月亮离地球距离近，潮水就高。 ? 2. if从句用一般现在时，主句用一般将来时，表示从句中的动作如果发生，那么主句中的动作也将发生。如： If it stops raining later this afternoon, we will eat out. 如果今天下午晚些时候雨能停，我们就出去吃饭。 3. if从句用一般现在时，主句用祈使句，表示给某人提建议或命令某人做某事，及提出建议或请求。如： If you are not likely to be in town, please let me know. 如果你不可能在城里，请让我知道。 注意： 1）在真实条件句中，主句不能用be going to表示将来，该用shall, will. 2）表示真理时，主句不用shall (will) +动词原形，而直接用一般现在时的动词形式。 ★ If it were not raining, we should go for a picnic. 如果现在不下雨的话，我们就出去野餐了。 ★If he came here, he might be able to help you. 如果他来这，他就能够帮助你了。 ★ She would have gone to the party if she had been invited.　　 要是当初她被邀请的话，她就会去参加这次聚会了。 ★ If he hadnt called me, I would have overslept this morning.　　 今天早上，她要是不叫我的话，我就会睡过头了。 　　 　 If you came tomorrow, we would have the meeting. If I were to be twenty years old next year, I would take the course of French. If he should not come tomorrow, we would put off the meeting till next week If it should fail, I would try again. 要是失败了，我会再试一次。 （四） 、省略句 在条件句中，可省略 if，把were ,had, should 提到句首，变为倒装句式． If I were at school again, I would study harder. Were I at school again, I would study harder. If you had come earlier, you would have met him. Had you come earlier, you would have met him. If it should rain tomorrow, we would not go climbing. Should it rain tomorrow, we would no