凌空中的物體: moon,star, airplane,satellite,meteor, comet,pianet, Venus, Jupiter 交空中天體的特點:move,still,twinkle,big,bright, circle,curvedsliver, full, dark orange red, tiny, twinkling 與天體運動有關的詞: move,orbit,travel, fall compare with...與.....相比較 between...and...在......與.....之間 connect...with...把......與-.--..相連 once in a while 偶爾;有時 beMedwith...裝滿··.· 賓語從句: Have you ever wondered what they are? 被動語態: At the full moon, the side facing Earth is fully lit up by thesun. 原因狀語從句: But since they are so far away, they look very small 現在完成進行時態:People have been looking for constellationssince ancient times. 結果狀語從句: Many stars are so far away that it takes millions ofyears for their light to reach Earth.