【正文】 揭示課題：山雨 初讀課文，整體感知。 談話導(dǎo)入，揭示課題 自然界中，美無(wú)處不在，只要細(xì)致觀察，用心傾聽，你一定能發(fā)現(xiàn)美。 課前準(zhǔn)備 1． 讀不同作家寫雨的作品。 2．感受山雨帶韻味，體會(huì)作者對(duì)山雨的喜愛(ài)，領(lǐng)略大自然的秀美。 背誦積累，提升感悟 選自己喜歡的句子或段落背下來(lái)。她們能跟我們說(shuō)話，能跟 我們交流，她們成了我們的朋友，難怪作者進(jìn)山看景，變成了“山中訪友”。 學(xué)習(xí)首尾，體會(huì)寫法 （ 1）再讀文章的開頭和結(jié)尾，你們又感受到了什么？ 作者清晨進(jìn)山，到“帶回一路月色”，從這兒看出他在山中整整一天，讓我們強(qiáng)烈地感受到了人與自然的那份親密無(wú)間。只有像作者那樣用心地去感受，才能感受得到。 從“一朵落花”“一片落葉”“一塊石頭”中，讓我們感覺(jué)到生命的輪回、世事的變遷。 體會(huì)寫法：排比的句式、擬人的手法。 ②第 5 自然段：通過(guò)朗讀，感受與山中朋友的親熱。 ( 2) Dist ribut ed Contr ol Sys tem ( DCS f or short ), and ( 3) t he Pr ogram mable Logical Contr oler ( PLC f or shor t). . 2 PLC and t he I PC and DCS cont rast contr ast 1, each of t he t hree t echnologies of or igins and developm ent r equir em ent s f or f ast dat a pr ocessing m akes it invented t he puter. The m en brought in t erm s of har dwar e t here, using a high level of st andar dization, can use m or e pat ibilt y t ools, is a r ic h sof t war e r esour ces, especially t he need f or imm ediacy in oper ational syst em s. So t he put er can eff ectively cont r ol is us ed t o cont rol and m eet it s peed, on t he vir t ual m odel, r eal t ime and in putational r equir em ents. Dist ributed system start ed wit h a cont rol syst em f or indust rial aut om at ic nst r ument used t o contr ol, whereas now it is sucessf uly developed int o indust r ial cont rol puter used as a centr al colect ion and distr ibut ion syst em and t ransit ion of dist ributed contr ol system in analogue handling, loop cont rol, has begun to r ef lect t he use of a huge advant age. Though dist ribut ed system has gr eat advant ages in loop r egulation, but only as a means of cont inuous process cont rol. Optimization of PLC is t he cor esponding r elay needs was bor n, it s m ain use in t he wor k or der contr ol, early pr imary is r eplaced r elay t his hulking system, f ocused on the switch contr oling t he r uning order of funct ions. M ar ked by the microprocessor in t he early 1970 of t he 20t h century emerged, m icroelectronics t echnol gy has developed r apidly, people soon microelect ronics pr ocessing t echnol gy wil be used in t he Pr ogrammable Logical Contr oler ( t hat is 讀一讀，體會(huì)作者當(dāng)時(shí)人樹相融的感受。s m oder n i dust rial aut om at ion t echnol gy t he subst antial incr ease in t he level of industrial aut om at ion, plet ed t he per fect r elay of t he put er t oo m uch. I n t erm s of contr oling t he put er showed his t wo gr eat advant ages: ( 1) each of t he har dware can be installed on one or m ore micr opr ocessor s。t opport unit ies awar eness in world r ange wit hin som e leading level of knowledge has has m ust awar eness, hope designers can in yihou of design in t he can sucess of using in t his design i t he pr oceeds of experience 1. 2 m anipulator in bot h at hom e and abroad of r esearch pr ofile aut om ation m echanical ar m r esearch began Yu 20t h cent ur y m ediumt erm, af t er years wit h wit h put er and aut omation t echnol gy of developm ent , M akes m echanical ar m on t he Gr and st age of industrial aut om at ion and shine, gradually became an industr ial evaluation st andar ds, and it s im por tance can be seen. Now original r obot ic arm spent m ost of m ass pr oduct ion and use on t he pr oduct ion li e, which is pr ogr ammed r obot ic arm. As t he f ir st gener ation of manipulat or posit ion contr ol syst ems m ain f eatur es, alt hough not back sever al gener ations t hat can detect t he external envir onm ent, but can stil successfuly plete like welding, painting, deliver y as well as for materials simple m ovements. Second generation mechanical ar ms ar e equipped wit h sensor s and manipulat or s have t he envir onment her e is a cert ain amount of sense, when t he m echanical ar m is t o use t he pr ogram as a basis. Dif fer ence is t hat t he r obot begand contiue ,1Cwlgf40z28yx%B9T:/kqL)181。 M anipulator is now used as a indust rial r obot s in use, t he contr ol bj ectives of t en appear oft en in industr ial aut omation. I ndustr ial automation t echnol gy has gr adually m at ur ed, as mat ur e a t echnol gy line has been r apid developm ent in industr ial aut omation as a separ at e subject . M anipulat or application began t o f ilt er int o welding, logistics, mechanical pr ocessing, and ot her indust ries. Especially at high or ver y low t em per at ures, f ul of poisonous gases, high r adiation case, r obot in sim ilar cir cum st ances showed gr eat use also br ings gr eat convenience t o t he st af f. Pr ecisely because of t his r obot t o get people39。 讀文感悟，體驗(yàn)情感 （ 1）默讀課文第 4— 7 自然段，用橫線劃出，訪問(wèn)了哪些朋友？ （ 2）再讀課文，找一找，從哪些描寫中可以看出“我”和山里的“朋友”有著深厚的感情？ （ 3）交流 感受，隨機(jī)教學(xué)。 抄寫生字詞語(yǔ) 第二課時(shí) 聽寫詞語(yǔ)，復(fù)習(xí)引入 （ 1）聽寫詞語(yǔ)。 （ 5）體會(huì)寫法。 （ 3）再讀讀畫線的話，體會(huì)體會(huì)，作者是懷著怎樣的心情對(duì)古橋訴說(shuō)的？你是從哪兒感受到的？ （ 4）交流感受。請(qǐng)同學(xué)們一起讀課文第 3 自然段。 （ 2）誰(shuí)能把自己讀得最流暢的一段讀給大家聽？ 師隨機(jī)糾正，重點(diǎn)點(diǎn)撥。 （ 2）讀后交流，了解大意。請(qǐng)同學(xué)們一起讀課題。我們這學(xué)期學(xué)習(xí)的第一組課文 ,將帶領(lǐng)我們投入大自然的懷抱，領(lǐng)略大自然的風(fēng)姿，傾聽大自然的聲音，與大自然互訴心聲、交流感受。 ( 2) Distr ibut ed Contr ol System ( DCS for short ), and ( 3) t he Programmable Logical Contr oler ( PLC f or shor t) . PLC and the IPC and DCS contr ast contr ast 1, eac h of t he t hree t echnologies of or igins and development r equir ement s f or f ast data pr ocessing m akes it invent ed t he puter. The men br ought in t erms of har dware t her e, using a high level of standardization, can use more patibilt y t ools, is a r ich soft war e resources, especially t he need f or im mediacy in oper ational systems. So t he puter can ef fect ively contr ol is used t o control and meet it s speed, on t he vir t ual m odel, realt ime and in putational r equir ements. Dist ributed system start ed wit h a cont rol syst em f or indust rial aut omat ic instrument used t o contr ol, whereas now it is sucessf uly developed int o indust r ial cont rol puter used as a centr al colect ion and distr ibut ion syst em and t ransit ion of dist ributed contr ol