高中英语人教版 (2019)必修 第二册Unit 4 History and traditions教课ppt课件

这是一份高中英语人教版 (2019)必修 第二册Unit 4 History and traditions教课ppt课件，共28页。PPT课件主要包含了考点追击，if ever，if any，If not，If so，while的其它用法，although，完成句子，While，while等内容，欢迎下载使用。
教材原句： S what is the difference between them, if any?
句型分析：本句中if any是省略句，补全句子是：if there is any difference.
“if any”的省略结构
“if+any”的省略结构
Crrect errrs, if any.如果有错误就改正。=Crrect errrs, if there are any errrs.
if any 如果有…；即使有…
There are few peple nwadays, if any, wh remember him.当今记得他的人，如果有的话，也不多了。= There are few peple nwadays, if there are any peple，wh remember him.
What quality, if any, d yu like the mst abut yur partner?你最喜欢你同伴的哪一点，假如有的话？= What quality, if there is any quality, d yu like the mst abut yur partner?
“if+其它”的省略结构
If pssible, let me knw befrehand.如果可能，可在事前通知我。
if pssible 如果可能
If necessary, ring me at hme.如果有必要，可往我家里打电话。
if necessary 如果必要
She seldm, if ever, ges t the cinema.她难得看电影。
if ever 如果曾经有的话（极少，难得），常和seldm连用
I may be free this evening. If s, I’ll cme rund and see yu.今晚我可能有空。要是有空的话我会过来看你。
if s 如果是那样的话
Ask her if it is cnvenient tnight. If nt, can she suggest anther pssible time?问一下她今晚方便不方便。如果不方便的话，她可不可以提出一个可行的时间。
if nt 如果不的话
He seldm, ________, travels abrad.There are few mistakes in his hmewrk, _______.I might see yu tmrrw._____, then it will be Staurday.He may be busy. ____, I’ll call him later.
用if any, if ever, if s, if nt填空
Sum up: “if +any”的省略句
if any如果有的话；
“if+其它”的省略结构if pssible/necessary如果可能/必须if ever 极少，难得if s/nt如果是/不是
“while+分句”结构
教材原句： On a quiet mrning in the muntains, feel the sun n yur skin, and breathe in the sweet scent f fresh flwers while birds greet the new day with their mrning sng.
句型分析：在本句中，feel…and breathe…是祈使句；while连接并列分句。
while连接并列分句
while作并列连词，表示对比，意为“然而”
I was never very neat while my rmmate Kate was extremely rganized.
分句+while+分句
There is plenty f rain in the sutheast, while there’s little in the nrtheast.Sme peple waste fd while thers haven’t enugh.
while和前面分句可用逗号隔开，强调前后两分句之间的对比.
Mary made cffee while her guests were finishing their meals.While I was playing the pian, she was dancing.
作从属连词，引导时间状语从句，意为“当…的时候”。
While the Internet is f great help, I dn’t think it’s a gd idea t spend t much time n it.
作从属连词，引导让步状语从句，意为“虽然，尽管”。
While there is water and air there will be life.
作从属连词，引导条件状语从句，意为“只要”。
Wuld yu like t cme in and rest fr a while?nce in a while 偶尔；间或
作名词，表示“一会儿或一段时间”。
He likes playing ftball, while his wife likes playing vlleyball.He was very tired, but he kept n wrking.
辨析while和but的区别：
while强调对比，“然而”
but强调转折，“但是”
_____ I see what yu say, I can’t agree with yu.---I wnder hw much yu charge fr yur services? ---The first tw are free______ the third csts $ the students came frm different cuntries, they gt alng quite well in summer camp.
Sum up: “while+分句”结构