外研版（2024）八年级下册（2024））Understanding ideas说课课件ppt

这是一份外研版（2024）八年级下册（2024））Understanding ideas说课课件ppt，共20页。PPT课件主要包含了V-ing形式，that，whether，ifwhether等内容，欢迎下载使用。
In this lessn, yu will:1. master the usage f the bjective clauses with that, if r whether. 2. use bject clauses crrectly when writing a shrt passage abut nature explratin.
① I need a pen.② Jhn helped her.③ Children stpped talking.④ I d nt want t cry.⑤ He knew (that) he shuld study hard.
在主从复合句中充当宾语的句子称为宾语从句。
宾语表示动作行为的对象，常跟在及物动词或介词之后。
试着找出下列句子中的宾语。
(a) Fr hundreds f years, peple believed that dinsaurs lked like big lizards.(b) They can tell us whether dinsaurs had feathers, but that's nt all.
Read the sentences frm the reading passage and summarise the grammar rules.
that 引导的宾语从句
whether 引导的宾语从句
Nw find mre sentences with these structures in the reading passage.
Hwever, thanks t a piece f amber, scientists nw knw that this idea is wrng.They als help us understand that life n earth has always changed. In the future, amber may als help us discver if ther species have changed ver time.Research shws that they are a cmpletely new species.Wh knws whether this piece f amber will tell us mre secrets?
Grammar Rules
e.g. I believe that we can achieve the gal.
e.g. Can yu tell me hw I can get t the nearest subway statin?
e.g. I wnder if/whether Grace has finished her hmwrk.
根据引导词的不同，宾语从句可分为以下三种：
1. 由that引导的宾语从句；
2. 由if/whether引导的宾语从句；
2) I believe that April is the httest mnth in Thailand.
1) I knw that the Water Festival is really fun.
主语+谓语动词+that引导的宾语从句
(一) that引导的宾语从句
that无任何词义，只起连接作用，在非正式文体中可以省略
2. whether/if 引导的宾语从句
当宾语从句的语义相当于一个一般疑问句时, 常用if / whether引导, 表示 “是否” 。if / whether在句中不充当句子成分, 但不能省略。宾语从句要用陈述句语序。 e.g. I wnder if / whether yu want t attend the meeting. She didn’t say if her aunt was still with them. I dn’t knw whether yu like flwers.
以下情况只能用whether：与r nt 连用时，只能用whether。 e.g. I’m wndering whether I shuld g t the party r nt. 在介词后只能用whether。 e.g. They are talking abut whether the by can win the game again. 与动词不定式连用时，只能用whether。 e.g. I can’t decide whether t buy the shes.
① I think (that) he'll return in an hur.② He said (that) he missed us very much.③ Mary asked me whether/if I culd help her.④ We knew (that) summer is after spring.
宾语从句的时态取决于主句的时态:1. 主句使用现在时，从句可使用任何时态；
2. 主句使用过去时态，从句使用相关的过去时态。
3. 当宾语从句是客观真理或不可改变的自然现象时，宾语从句须用一般现在时。
(三) 宾语从句的时态
Scientists aren’t sure
Jhn tld his parents
Mr Brwn is interested in insects r birds.
if / whether
there is life in uter space.
he wanted t be a scientist and study plants.
if / whether
Emily wants t knw
一般疑问句，表示“是否”，用if或whether引导
肯定句，表示肯定或陈述内容，用that引导
Cmplete the messages with that, if r whether.
MESSAGE BOARD
if/whether
Dear Daniel,In the past, peple thught 2__________there were nine planets. Hwever, questins were raised abut 3_________ Plut was a planet. In 2006, scientists agreed 4__________
a true planet:1. mves arund the sun2.is rund (r nearly rund)3. can clear things in its wayPlut desn't meet the third pint. Therefre, we nw believe5_________ there are eight true planets in the slar system. That's why Plut isn't part f the mdel. Please let me knw 6_________ yu need mre infrmatin.
that if whether
1. The reprt says ______ this amber frmed in a warm frest lng ag.2. We dn’t knw _________ the ld ant culd climb trees r nt.3. They are talking abut __________ they can find mre amber near the hill.4. I believe ______ ur team will win the game.5. She wnders _________ the dinsaur feather in the amber is kept well.
Yu are Nature Secret Reprters. Wrk in pairs. Write a 4-5 sentence reprt abut natural secrets in amber. Yu shuld use at least 2 bject clauses with that/if/whether.
Steps:Talk with yur partner. (What secret did amber tell first? What ther secrets were fund in amber? What d scientists wnder abut future amber?)Write yur reprt tgether(4-5 sentences). Check yur wrk. (D yu include tw bject clauses with that/if/whether?)
Be a Nature Secret Reprter!
Wrk in pairs. Lk at the ntice and write a shrt passage abut explring nature. Use the wrds and expressins frm the reading passage and the Useful expressins t help yu.
Useful expressinsFr hundreds f years, peple believed made an amazing , ... fund / realised / saw prves teaches us shws that...