20-21版：Writing—Expository writing：solving a proble

Then，help others when they are in trouble，and ask them to help you when you have difficulty.Soon，I believe，you will make many new friends there.
Best wishes! Yours， Li Hua
[关键句式] 1.你进入高中后感觉不好。 You feel bad after entering high school. 2.听到这件事，我很遗憾。 I am really sorry to hear that. 3.你的同学也是新生，也面临同样的问题。 Your classmates are also new there and face the same problem. 4.你没有必要对此太过担心。 There is no need for you to worry too much about it. 5.和别人交流能帮助你们更好地了解彼此。 To communicate with others will help you understand each other better.
We can never overemphasize the importance of saving water.But we are now wasting a large amount of water in our daily life.
It’s estimated that about 70% of the water used in a family every day can be saved if we follow the tips below.
[句式升级] 1.用宾语从句把第1句和第2句合并成一句。 _I_a_m__r_e_a_l_ly__s_o_rr_y__to__h_e_a_r_t_h_a_t_y_o_u__f_ee_l_b_a_d__a_f_te_r__e_n_te_r_i_n_g_h_i_g_h__sc_h_o_o_l_.____ 2.用连词so把第3句和第4句合并成一句。 _Y_o_u_r__c_la_s_s_m_a_t_e_s_a_r_e_a_l_s_o_n_e_w__t_h_e_r_e_a_n_d__fa_c_e__th__e_s_a_m_e__p_r_o_b_le_m__s_o__th_e_r_e__is_n__o_ _n_e_e_d_f_o_r_y_o_u__t_o_w__o_r_ry__t_o_o_m__u_c_h_a_b__o_u_t _it_._ 3.用it作形式主语改写第5句。 _I_t_w_i_ll__h_e_lp__y_o_u_u_n__d_e_rs_t_a_n_d__ea_c_h__o_t_h_e_r_b_e_t_te_r__to__c_o_m_m__u_n_i_c_a_te__w_i_th__o_t_h_e_rs_._
Unit 4 Astronomy : the science of the stars
Writing—Expository writing：solving a problem
PART 1 技法点拨 PART 2 典例展示 PART 3 写作训练
PART 1
技法点拨
文体分析 把握写作动脉
◆写作指导
◆组句成篇
用适当的过渡词语把以上词汇和句式，再加上联想内容，组成一篇100词 左右的英语短文。 [参考范文] Dear Jenny，
I am really sorry to hear that you feel bad after entering high school.Your classmates are also new there and face the same problem so there is no need for you to worry too much about it.There is also something that you can do to change this situation.First，try to invite some of your classmates to take part in some activities together after school.It will help you understand each other better to communicate with others.
◆常用表达
1.To start with，...The second reason is...The last but not least important reason is... 2.First of all，...Secondly，...Thirdly，st but not least，... 3.Now that the causes for...are organized，some solutions must be made in order to... 4.In my opinion，the best way to solve the problem is... 5.My tips are as follows... 6.The reasons for...can be listed as follows. 7.If I...，here is a problem I might have. 8.Perhaps I would use...
1.放学后邀请同学一起参加活动； 2.同学遇到麻烦时，去帮助他们； 3.遇到困难时向同学求助。 注意： 1.词数100左右； 2.可适当增加细节，以使行文连贯。
◆审题谋篇
[审题] 写作要求是帮助朋友解决适应新环境的问题。写作时应注意下面几点：
1.确定文体：这是解决问题类文章。写作时注意解决问题类作文的写作特点。 2.主体时态：文章应以一般现在时和一般将来时为主。 3.主体人称：由于是指导朋友如何适应环境，所以人称应该以第二人称为主。
[谋篇] 第一部分：提出现象。 第二部分：分析原因。 第三部分：解决问题，并表达祝愿。
◆遣词造句
[必备词汇] 1.面对问题 2.改变这种状况 3.邀请某人做某事 4.参加 5.与……交流 6.处于困境 7.交朋友
_fa_c_e__th_e__p_r_o_b_l_em__ _c_h_a_n_g_e_t_h_i_s_s_it_u_a_t_io_n_ _in_v_i_t_e_s_b_._t_o_d_o__st_h_._ _ta_k__e_p_a_r_t_i_n_ _c_o_m_m__u_n_i_c_a_te__w_i_th_._.._ _in__t_ro_u__b_le_ _m_a_k__e _f_ri_e_n_d_s_
Only when everyone takes an active part can we really help save our limited water作妙笔生花
假如你是李华，最近收到了你的美国朋友Jenny的来信。她在信中说， 由于刚进入高中，还不能适应新的环境，不知道如何去结交新朋友，因而 情绪低落。请根据以下内容给她回信，告诉她解决办法。
本课结束
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PART 2
典例展示
经典示例 感悟体会佳作
水是生命之源，而在现实生活中，浪费水的现象屡见不鲜。请你以 “How to Save Water”为题，写一篇100词左右的英语短文，提出解决办法。 内容包括：
1.说明节约用水的重要性； 2.提出节约用水的具体方法； 3.发出号召。
[范文赏读] How to Save Water
Firstly，use recycled water.For example，you can use the water to wash rice first，and then use it to wash vegetables.Finally，the water can be used to wash the toilet.
本单元的写作任务是写解决问题类作文，一般从以下几个方面展开： 1.提出问题或列出现象，并简要阐述其产生的原因； 2.说明其对生活和社会的影响； 3.提出解决问题的方法。 写作时应注意以下四个方面： 1.此类书面表达通常为话题作文或看图作文，应仔细研读提示信息或图画，明确应围 绕什么问题或现象展开评论； 2.围绕主题，进行拓展。根据要求和提示信息合理安排篇章中各部分的内容，做到详 略得当、条理清楚、文字简练； 3.时态：多采用一般现在时，但如果提示中给出了具体时间，则应对时态进行相应的 调整； 4.要注意存在的问题，分析此问题可能带来的危害，然后针对此问题提出解决方案。
Secondly，when you are taking a bath，turn down the tap a little bit.Remember to shut it off in time if you are not using it.
Thirdly，when you are washing dishes，use some paper to clean them first，and then use the water to wash them，which will save much water.