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2.“到十九世紀(jì)二十年代末,人們認(rèn)識到了這種金屬可用在制造電燈上?!? By the end of the 1820’s, it had been realized that this metal could be used in manufacturing electric lamps. 3.“到今年年底,他們在西電工作 [參軍 ]三十年了?!? By the end of this year, they will have worked in Xidian University for thirty years. By the end of this year, they will be in the army for thirty years.(狀態(tài)) present perfect past perfect [with action verbs] future perfect By ~ time, present past [with state verbs—“be, have, …”] future VI. Comparisons ? P22基礎(chǔ)知識 比較級與最高級構(gòu)成 : 普通,以輔音 y結(jié)尾的詞,詞尾只有一個輔音字母的重讀閉音節(jié)詞, 1. The way to express the idea of “… 得多” p24 Formula: much [many] far (by far) very much a lot + parative degree (than) a great deal considerably Noticeably . This circuit requires many more ponents than the circuit shown on page 3. 該電路比第三頁所示電路需要的元件多得多。 This machine works much better than that one. 這臺機(jī)器的性能比那臺好得多。 This device is far more useful than that one. 這臺設(shè)備比那臺有用多了。 Noticeably, much [many] , far (by far) 2. The ways to express the idea of “越來越 …” (1) for monosyllabic words using the synthetic form : “ ...er and ...er” . You can see the car moving faster and faster. for polysyllabic words using the analytic form “more and more ...” . That girl is more and more beautiful. (2) ever + ~ er mainly for monosyllabic words . Computers are being ever smaller. (3) increasingly + positive degree mainly for polysyllabic words . Electronic devices are getting increasingly plicated. ★ (4) a main clause containing a parative degree + an asclause expressing time “隨著” . The accelerating(加速) force bees smaller as the body approaches the center. 3. The ways to express