定义：在复合句中由从句表示的状语 称作状语从句，它可以用来修 饰谓语（包括非谓语动词）、 定语或状语，或是整个句子。准确掌握每一个连词的含义 是掌握状语从句的关键。同时要注意主从句的时态呼应。状语从句一般分为九大类状语从句类别:时间状语从句

时态－－主将从现 主句一般将来时， 从句一般现在时Revisionif条件状语从句结构及时态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

Chapter 1 Memory条件状语从句： Unless1条件状语从句：If ①1. 如果他努力学习，他将会通过考试。If he _st_u_d_i_e_s_ hard, he _w_i_ll_p__a_ss_ the exam. 2.

_I’_ll_p_l_a_y_b_a_s_k_e_t_b_a_ll_.If it is sunny this weekend, what will you do ?If it is sunny this weekend, I __w_i_l

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__

1．当主句和从句所表示的是原理、客观真理、规则时，主句是一般现在时（包括祈使 句和含有情态动词can/may/must等）， 从句也要用一般现在时。例如： 1) If you put a piece of paper into water,

If he always w__a_tc_h__e_s_T_V_ (watch TV ), he_w_i_ll_b_e__b_o_r_e_d_ (bored).in the futuremake a lot of money buy a b

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 S

If从句（条件状语从句）If it is fine tomorrow, I will climb the mountain.If it is sunny this weekend, what will you do ?If it is su

Study hard and you will pass the exam.===if you study hard ,you will pass the exam.Hurry up ,or you will be late .===if

Mike一来就会告诉你条。件状语从句no war, the world, more beautiful, If there is no war, the world will be more beautiful.she, not exerc

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

If you don’t clean your teeth regularly, you will have toothache Unless you clean your teeth regularly, you will have to

When the children had gone to bed, she began to prepare her lessons.A11While ---在……期间，往往指 一段时间。While we were in America,

If it is sunny this weekend, I__________.If it is sunny this weekend, what won’t you do ?If it is sunny this weekend, Wo

除非天气不好，我每天早晨都要去散步。 3. I won‘t loan you unless you are in extreme need of money． 若不是你急需用钱，我

she, not exercise enough, heavier If she doesn’t exercise enough,she will be heavier. 1.主将

如果我们提出更优惠的条件，他就会在合同上签 字。He won't be against us in the meeting providing (that) we ask for his advice in advance．如果我们提前征求

条件状语从句二、时态问题在条件状语从句中，要注意" "的规定，即 主句用一般将来时，从句用一般现在时表示将来时。I will come to see you if I have time. 我有时间，我就来看你。 常见考法主将从现对于条件状

含情态动词的 祈使句.unless 除非,非……不可, 表强烈的否定You will fail unless you work harder . 你不努力就会失败的。Don’t c