文档介绍：Book4 Module 3.
Body Language and Non-verbal Communication
Period 2. Grammar
课前篇：对标梳理，明确任务
★ 学****if、when、unt go unless he asks me. 他不来请我我就不去。
You will fail unless you work harder. 你不努力就会失败的。
Don’t come unless I call you . 我不叫你就别来 .
【注意】 unless 从句里的谓语只能是肯定式 ，因为本身unless表示否认。
误:Unless you do not work, you will fail。
正：Unless you work hard， you will fail。
正：If you don’t work hard， you will fail.
让步状语从句
表示“虽然,尽管”，“即使"，“无论”，常见的有_________/__________/__________ （尽管)，___________/____________ (即使)，_________________/_____________ （无论… )等。
品读以下句子:
Air exists everywhere although we can’t see it.
Child as he was, he knew what was the right thing to do.
You have no right to do such a thing, whoever you may be.
We are so busy that we have little time for outdoor sports， even if we have the interest.
【合作探究】
句子(3）还可以怎样表达？________________________________
( ）______ you may have, you should gather your courage to face the challenge.
However a serious problem B. What a serious problem
C。 However serious a problem D. What serious a problem
结合此题给你的启示和已有知识，归纳however的用法：
【即学即练】
完成教材P27,Activity 2。
课后篇：总结和反思,提炼精华
＊单项填空
1. The little boy won’t go to sleep ______ his mother tells him a story。
A. or B。 unless C。 but D. whether
2。 – Our holiday cost a lot of money。
—- Did it? Well， that doesn’t matter ______ you enjoyed yourselves.
A。 as long as B。 unless C。 as soon as D. though
3. – Shall we have a picnic tomorrow？
—- ______ it doesn’t rain.
A. Until B。 While C. Once D. If
4。 __ his has limited technical knowledge， the old worker has a lot of experience.
A. Since B。 Unless C。 As D. Although
5. Tim is in good shape physically, ______ he doesn’t get much exercise。
A. if B. even though C. unless D。 as long as
6. I