5．________ we'll succeed depends on ________ we have enough courage．（　　）
A．Whether； whetherB．if； if
C．Whether； ifD．If； whether

分析 我們能否成功取決于我們是否有足夠的勇氣．

解答 答案是A，考查名詞性從句．whether 與if在引導(dǎo)主語(yǔ)從句、表語(yǔ)從句、同位語(yǔ)從句時(shí)一般用whether不用if，分析句子可知we'll succeed 是主語(yǔ)從句； we have enough courage是賓語(yǔ)從句，而且是做介詞on的賓語(yǔ)，從句作介詞賓語(yǔ)時(shí)只用whether不用if．所以答案選A．

點(diǎn)評(píng) 名詞性從句一直是高考考查的熱點(diǎn)，近幾年的高考題主要考察在具體語(yǔ)境中對(duì)what和that的辨析，此外，也要求學(xué)生對(duì)定語(yǔ)從句和名詞性從句有清晰的辨認(rèn)． 首先我們要判斷它是哪個(gè)名詞性從句．名詞性從句是主句的一部分，可以充當(dāng)主語(yǔ)、賓語(yǔ)、表語(yǔ)、同位語(yǔ)．就是說(shuō)，如果我們能判斷出某個(gè)從句是某個(gè)主句的主語(yǔ)、賓語(yǔ)、表語(yǔ)或同位語(yǔ)，

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