本单元重点的语法项目是表示目的的方式，下面将表示目的的几种方式归纳如下。

1、动词不定式(包括 so as to，in order to)。

2、用so that和 in order that引导目的状语从句，从“句中一般含有情态动词can，could，may，might等。下面以“为了能赶上第一班车，他每天都起得很早”为例。

He gets up early every morning

以上是用肯定句结构。

用否定结构，注意“不定式的否定结构在to前加not; so that/ in order that 只有在主句主语和从句主语一致的情况下可以换成 so as to/in order to;in order to可放于句首，so as to则不可)

so that he can’t miss the first bus.

in order that he can't miss the first bus.

so as not to miss the first bus.

in older not to miss the first bus.

so that也可用来引导结果状语从句。在so that引导的结果状语从句中，谓语动词前不用情态动词，主从句间可有逗号隔开。例如：

Everyone said no, so that the plan was dropped. 大家都反对，计划就不再讨论了。

cut down, cut in, cut off与cut out的区别

cut down意为砍倒，削减，指将树砍倒或裁军

to cut down a tree with an axe 用斧头把树砍倒

cut in 意为打断，指从语言中打断

Don't cut in while I'm talking. 我说话时别插嘴。

cut off意为“切断、切下”指切断电源，水源，煤气等。

He cut off the gas when a fire breaks out.

cut out意为切下，删下，指删掉，剪下文章等。

He cut out an article from the newspaper.

教学设计方案 Lesson 17

一、Teaching Aims

1. To learn how to plant things from this dialogue.

2. To learn to use the following useful words and expressions.

Burn, so that, stop. . . (from) doing, make. . . do

3. To make sure that the students can act out the dialogue publicly and that they can make a similar dialogue.

二、Teaching Procedures

Step 1Revision

1.Check the homework exercises

2.Ask some Ss to read aloud the travel diary

Step 2 Presentation