英語it強調句型怎麽用？

壹、it強調句型的構成：It+be+被強調部分+that(強調部分指人做主語時時用who，指人做賓語時用whom)+句子的其他部分。例如：Mary met an old beggar in the street yesterday.It was Mary who/that met an old beggar in the street yesterday.(強調主語)It was an old beggar whom/that Mary met in the street yesterday.(強調賓語)It was yesterday that Mary met an old beggar in the street.(強調時間狀語)It was in the street that Mary met an old beggar yesterday.(強調地點狀語)註意：it強調句型不能強調句子的謂語。二、not…until結構強調句型的構成：It+be+not+until部分+that+句子的其他部分。例如：He didn't go to bed until his father came back..變為強調句型為：It was not until his father came back that he went to bed.註意原句中的didn't go部分中的not提前後，剩下did go變為went.本文開頭提到的兩個句子都是not..until結構用於強調句型。那麽把這兩句話變回正常的語序則為：1)…but he didn't make his most important discovery until after the war.2)The importance of Fleming's discovery was not fully recognized until World War II.三、特殊疑問句強調句型的構成：特殊疑問詞+be+it+that+句子的其他部分(用陳述語序)例如：When did you receive the gift？對特殊疑問詞when做強調：When was it that you received the gift？註意此句中的received是由did加receive結合而成的。