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【拓展】count on和depend on / upon 都可意為"依靠，依賴"。如：

I can count on Bill to get the job done.

Our success mostly depends on your help.

【短語3】break down

【點撥】break down可意為"分解，分化"。如：

After many years， rocks break down into dirt.

【拓展】根據下列例句體會break down的其他意思：

We are late because the car broke down halfway. (壞了)

The peace talks have broken down because neither side would compromise. (失敗)

She broke down with a sob and covered her face with the hands. (感情失控)

The expenditure on the project breaks down as follows： wages 5，000 dollars， materials 8，000 dollars. (分割)

熱點語法聚焦

虛擬語氣是一種特殊的謂語動詞形式，用于表示說話人的假設、愿望、懷疑或推測等。本 期重點講述虛擬語氣在if引導的非真實條件狀語從句中的用法。if引導的非真實條件句表示的是假設的或實際可能性不大的情況，故采用虛擬語氣。虛擬條件句 從時間上又分為與現在事實相反、與過去事實相反、與將來事實可能相反三種情況。以下表格是虛擬語氣用于if條件狀語從句中時，主句和從句謂語動詞的形式：

與現在事實相反：動詞的過去式(be動詞一般用were)would d could d might +動詞原形

If he had time， he would come to visit you. (實際上很可能沒時間)

與過去事實相反： had + 動詞-ed形式would d could d might have +動詞-ed形式

If he had taken my advice， he would have finished it on time.(實際上沒有采納建議，結果沒按時完成)

與將來事實可能相反

1. 一般過去時(be 動詞一般用were)

2. should + 動詞原形

3. were to + 動詞原形would d could d might +動詞原形

If it were to rain tomorrow， the football match would be put off.(說話人認為明天下雨的可能性很小)

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