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learn English well. (2020上海卷 27 ) A. I have felt B. have I felt C. I did feel D. did I feel ? __________ that no fish can live in. ? A. So shallow is the lake ? B. So shallow the lake is ? C. So the lake is shallow ? D. So is the lake shallow (92上海卷 14 ) ? _____,I have never seen anyone who39。用于省略 if的虛擬條件狀語從句: 條件狀語從句 主句 與現(xiàn)在事實(shí)相反 If+主語 +Ved (be動(dòng)詞一律用 were) 主語 +would/could +V原 與現(xiàn)在事實(shí)相反 If+主語 + had done 主語 +would/could +have done 與現(xiàn)在事實(shí)相反 A:謂語用 Ved B: were to do C: should + V原 主語 +would/could +V原 If的省略 : 當(dāng)從句中有 were, had 或 should時(shí) ,可省略 if,將were, had或 should提到主語前 ,構(gòu)成半倒裝形式 . (1)Were/Should/Had+主語 +(not)其他成分 =If+主語 +were/should/had+(not)其他成分 If he were my friend, I would expect his help. If it should rain tomorrow, I should stay indoors. If you hadn’t told me about it, I should never have known the whole thing. (2) Were it not for/Had it not for +n. =If it were