1. What it yas to become was uncertain until between 4. 5 and 3. 8 billion years ago when the dust settled into a solid globe. (P25)

[分析]

① 本句是一個(gè)主從復(fù)合句。

② 主句是 What it was to become was uncertain until between 4. 5 and 3. 8 billion years ago,when 引導(dǎo) 從句。

③ 主句中包含一個(gè)由what引導(dǎo)的主語從句，what在從句中作 。

[句意]隨后它會(huì)變成什么沒人能知道，直到38-45億年 前，這團(tuán)塵埃才慢慢地形成一個(gè)固體的球狀物。

[仿寫]杰克打算做什么我不知道，直到第二天早上，他 才告訴了我他的計(jì)劃。

1. [分析] 定語;賓語

[仿寫]What Jack was gping to do was not clear to me until the next morning when he told me his plan.

題目來源：2016年英語周報(bào)高一新課標(biāo) > 第38期2015-2016年高一新課標(biāo)

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