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(2)【 辨析 】 now that, since, for, as和 because now that “既然,由于,因為”。 now that同 since相似,語氣比 because弱,強調(diào)人們已知的事實。 Now that you are busy, let me do it for you. 既然你忙,就讓我給你做吧。 since “既然,由于,因為”。與 now that 相似。語氣比because弱,強調(diào)已知的事實。 Since you can39。t answer the question, I39。ll ask someone else. 既然你回答不出這個問題,我就問別人了。 for for表示推斷的原因,或補充說明理由。 It must be morning, for the birds are singing.一定是清晨 了,因為鳥兒在叫。 as “因為,由于”,語氣較弱,所引導(dǎo)的從句表示的是不言而喻、顯而易見的原因和理由,其從句一般放在主句前。 As it was late, we came back soon. 由于時間很晚了,我們很快就回來了。 because because引導(dǎo)的從句表示直接的原因和理由,表示按因果關(guān)系的推斷,語氣很強,用來回答 why的提問, 一般位于主句之后。 We couldn39。t go out because it was too 太冷,我們不能外出。 單項選擇 6. ___ you have chosen the job, you must do it well. A. Because B. Now that C. As D. For B