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4."How to"类议论文模板:

 导入:

 第1段:提出一种现象或某种困难作为议论的话题

 正文:

 第2段:Many ways can help to solve this serious problem, but the following may be most effective. First of all… Another way to solve the problem is … Finally…(列出2~3个解决此类问题的办法)

 结论:

 第3段:These are not the best but the only two/ three measures we can take. But it should be noted that we should take action to…(强调解决此类问题的根本方法)

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3.观点论述类议论文模板:

 导入:

 第1段:提出一种现象或某个决定作为议论的话题

 As a student, I am strongly in favour of the decision. (亮明自己的观点是赞成还是反对)

 The reasons for this may be listed as follows. (过渡句,承上启下)

 正文:

 第2段:First of all… Secondly… Besides…(列出2~3个赞成或反对的理由)

 结论:

 第3段:In conclusion, I believe that… (照应第1段,构成"总-分-总"结构)

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2.“A或者B”类议论文模板:

 导入:

 第1段:Some people hold the opinion that A is superior to B in many ways. Others, however, argue that B is much better. Personally, I would prefer A because I think A has more advantages.

 正文:

 第2段:There are many reasons why I prefer A. The main reason is that … Another reason is that…(赞同A的原因)

 第3段: Of course, B also has advantages to some extent… (列出1~2个B的优势)

 结论:

 第4段: But if all these factors are considered, A is much better than B. From what has been discussed above, we may finally draw the conclusion that …(得出结论) オ

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1.正反观点式议论文模板

 导入:

 第1段:Recently we’ve had a discussion about whether we should… (导入话题)

 Our opinions are divided on this topic.(观点有分歧)

 正文:

 第2段:Most of the students are in favour of it.(正方观点)

 Here are the reasons. First… Second… Finally…(列出2~3个赞成的理由)

 第3段:However, the others are strongly against it. (反方观点)

 Their reasons are as follows. In the first place… What’s more… In addition…(列出2~3个反对的理由)

 结论:

 第4段:Personally speaking, the advantages overweigh the disadvantages, for it will do us more harm than good, so I support it.(个人观点) オ

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 呼语及开场白部分:

 Ladies and gentlemen, May I have your attention, please? I have an announcement to make.

 正文部分:

 All the teachers and students are required to attend it.

 Please take your notebooks and make notes.

 Please listen carefully and we’ll have a discussion in groups.

 Please come on time and don’t be late.

 结束语部分:

 Please come and join in it.

 Everybody is welcome to attend it.

 I hope you’ll have a nice time here.

 That’s all. Thank you.

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 开头部分:

 How nice to hear from you again.

 Let me tell you something about the activity.

 I’m glad to have received your letter of Apr. 9th.

 I’m pleased to hear that you’re coming to China for a visit.

 I’m writing to thank you for your help during my stay in America.

 结尾部分:

 With best wishes.

 I’m looking forward to your reply.

 I’d appreciate it if you could reply earlier.

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24.(哈尔滨市)学习了浮力有关的知识以后,同学们都已经知道:浮力的大小跟物体浸在液体的

密度、排开液体的体积有关。但小明总感觉到:浮力大小应与物体所在液体的深度有关.他设计了如下的实验:

  在弹簧测力计下挂一圆柱体,从盛水的烧杯

上方某一高度缓慢下降,直到圆柱体刚好浸没于水中,如图所示是圆柱体下降过程中弹簧测力计读数F随圆柱体下降高度h变化图像。

  (1)根据以上实验分析图像BC段,可得结论                  

  (2)在评估交流时,小红却说:“浮力的大小与深度无关”,利用以上器材,在上述实验的基础上,请你补充小红的实验过程,证实小红的观点是对的,并在图中补充上小红的实验图像。

(3)他们的结论是正确的吗?请写出你判断的依据。

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23、(香坊区2007-2008学年度下学期期末测试)

在探究“浮力的大小与哪些因素有关”的实验中,同学们有以下猜想:

a.浮力的大小可能与液体密度有关;

b.浮力大小可能与物体排开液体中的体积大小有关;

c.浮力大小可能与物体浸入液体内的深度有关。 

  小红的实验小组对猜想C进行了如下的实验探究:将一个高为10cm金属圆柱体挂在弹簧测力计下,在金属圆柱体接触水面之前和接触水面后,分别记下了金属圆柱体下表面到水面的距离h和弹簧测力计相应的示数F(如右图),实验数据如下表:


1
2
3
4
5
6
h(cm)
0
2
4
6
8
10
F(N)
8.0
7.5
7.0
6.5
6.0
5.5

 (1) 小组分析表中数据得出:物体的浮力大小与物体浸入液体内的深度有关,且在同种液体内物体浸入的深度越大,所受的浮力越大。你认为该小组得出的结论是否科学?如果不科学,请分析产生这种不科学结论的原因是什么?并提出改进意见。如果认为科学,简述科学的道理。

(2)分析表中数据, 还可以得出物重为    N,第6次实验时,物体受到的浮力为    N,从中我们可以计算出此金属的密度为      kg/m3

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22.小明同学要研究铁块所受浮力是否与温度有关,如何去研究呢?请你帮他设计这次实验的全过程。要求:写出所需器材、研究的步骤,并设计一个记录实验数据的表格。

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21、 (04大连)在探究“浮力的大小与哪些因素有关”的实验中,某同学猜想:浮力大小可能与液体密度的大小、物体浸入液体中体积的大小、物体重力的大小有关。

请你设计一个方案,探究“浮力的大小与物体的重力大小是否有关”。

实验提供如下器材:实验桌、弹簧测力计、量筒、烧杯各一个;水、盐水、细线适量;一大块橡皮泥;体积相同的铜块和铁块各一块;体积不同的铁块各一块。

(1)从给定的器材中选出你需要的器材:

(2)实验步骤:

(3)根据可能出现的实验现象,得出相应的探究结论。

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