摩天大樓的建筑材料: mortar,stone,brick,iron,steel,concrete,cement 影響摩天大樓建設的因素: elevator,gravity,light,temperature,wind, earthquake, energy, water 章天大樓的種類: skyscraper, supertall,megatall later on 后來 since then 從那時起 stand out 突出;引人注目 have to do with...與......有關 in a way 在某種程度上;在某一點上 back and forth 來回地;反復地 more and more 越來越多 protect against 使免受 in the middle of... 在......中間 because of 因為;由于 what 引導的表語從句，例如: Thats what they called the HomeInsurance Building in Chicago, Illinois, U.S.A. 動詞的過去分詞短語作時間狀語，例如: Completed in 1930,it wonthe title of“World's Tallest Building.” as引導的時間狀語從句，例如: As wind moves through theopenings, giant turbines inside the building turn to make energy.