托福閱讀100個(gè)長(zhǎng)難句精選匯總深度解析：The delta rocks in which...

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　　托福閱讀100個(gè)長(zhǎng)難句實(shí)例分析

　　原句案例：

　　The delta rocks in which these fossils are found are commonly red due to oxidized iron minerals, indicating that the deltas formed in a climate that had alternate wet and dry periods.

　　詞匯解析：

　　delta: an area of low land where a river spreads into many smaller rivers near the sea

　　oxidized: to combine with oxygen, or make something combine with oxygen, especially in a way that causes rust.

　　mineral: a substance that is formed naturally in the earth, such as coal, salt, or stone. minerals can be dug out of the ground and used

　　alternate: two alternate things are placed one after the other in a regular pattern

　　結(jié)構(gòu)分析：

　　復(fù)合句。帶有in which 引導(dǎo)的定語從句和that 引導(dǎo)的賓語從句，隨后又有第二個(gè)that引導(dǎo)的定語從句。

　　句子分析：

　　The delta rocks in which these fossils are found are commonly red due to oxidized iron minerals,主句中，the delta rocks 是主語，后接in which 引導(dǎo)的定語從句，which指代的是delta rocks, 在從句中，these fossils 是主語， are found 是謂語。接下來回到主句，are commonly red 是系表結(jié)構(gòu)作謂語部分，due to oxidized iron minerals, 原因狀語。本部分意思是：化石常在這些三角洲的巖石中發(fā)現(xiàn)，而這些巖石由于氧化鐵礦物，通常都是紅色的。

　　indicating 作為定語。 that the deltas formed in a climate that had alternate wet and dry periods. 第一個(gè)that引導(dǎo)的賓語從句中，the deltas 是主語，formed 謂語，in a climate 時(shí)間狀語。第二個(gè)that引導(dǎo)的定語從句中，that指代climate， 作為主語， had 謂語，alternate wet and dry periods， 賓語。本部分意思是：表明三角洲形成于干濕交替時(shí)期。

　　參考翻譯：

　　化石常在這些三角洲的巖石中發(fā)現(xiàn)，而這些巖石由于氧化鐵礦物，通常都是紅色的，表明三角洲形成于干濕交替時(shí)期。

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