It's not how long you sit there with the books open; it's what you do while you're sitting.
本句式省略了一些成分,句子完整的主體結(jié)構(gòu)為it's not …that matters; it's …that matters. 對兩個(gè)事物進(jìn)行比較時(shí)可采用該句式,強(qiáng)調(diào)的重點(diǎn)在后半句.
Once the books are open or the computer is booted up, phone calls go unanswered , TV shows unwatched, snacks ignored.
這個(gè)句子的后半部分采用了三個(gè)并列的小句phone calls unanswered, Tv shows unwatched, snacks ignored,注意到后面兩個(gè)都省略動詞go.當(dāng)動詞一致的時(shí)候,為了句子的簡潔和精煉,往往可以將該動詞省去,也叫承前省略.Boot up此處意為"啟動".