第二单元 物质的变化
5、减少垃圾的数量是从源头上解决问题的办法,我们每个人都可以想出许多减少垃圾数量的方法。
16、在北部天空的小熊座上有著名的北极星,可以借助大熊座比较容易地到北极星。黑夜可以用北极星辨认方向。
9、淡水是我们人类和其他生物生存的必需品,但是地球上的淡水资源十分有限,地球上的多数地区缺水。
9、淡水是我们人类和其他生物生存的必需品,但是地球上的淡水资源十分有限,地球上的多数地区缺水。
3、苍蝇落在竖直光滑的玻璃上,不但不滑落,而且还能在上面爬行,这和它脚的构造有关。蟋蟀的耳朵在足的内侧。蝴蝶的翅膀上布满彩小鳞片,其实是扁平的细毛。
21、血液中的细胞好像运输兵,负责运输吸入的氧气和产生的二氧化碳。
21、人们发现银河系以外还有类似银河系一样庞大的恒星集团,如:仙女座星系、猎犬座星系,目前人类已发现了超过100亿个河外星系。
2、在加热的过程中,蜡烛发生了什么变化?(P29)
答:烧饭时米变成了饭;写字时纸上留下了字迹;下雨后路上的积水慢慢地变成水蒸气消失在空中;岩石风化变成沙子等。1.+ed work, plant,call
2.e+d live, change, like, love, agree, save, hate, move, arrive,,skate, hope, use
4。以辅音字母+y,结尾,变y为i+ed
try, study, carry, hurry, cry, worry, copy
不规则动词表
A. AAA 型
1. cast cast cast 投,掷
2. cut cut cut 割,切,剪
3. shut shut shut 关
沧海横流4. put put put 放
5. rid rid rid 使摆脱,去掉
6. hit hit hit 吐,唾
7. spit spit spit 击中,打,撞
8. set set set 放,置
9. let let let 让
10. upset upset upset 使心烦,翻倒
11. read read read 读
12. cost cost cost 花费
13. hurt hurt hurt 伤害
14. spread spread spread 传播,伸展
B. ABB 型
15. burn burnt burnt 燃烧
burned burned
16. learn learnt learnt 学习,
learned learned
17. hear heard heard 听到,听说
18. dream dreamt dreamt 做梦,梦到
dreamed dreamed
19. mean meant meant 意谓,用意
20. build built built 建造,建筑
21. rebuild rebuilt rebuilt 重建
22. spend spent spent 花费,消耗
23. lend lent lent 借给
24. send sent sent 寄,发送
25. get got got 得到
26. strike struck struck 打,罢工
27. dig dug dug 带鱼蒸几分钟能熟挖
28. win won won 获胜,赢得
29. hang hung hung 悬挂
30. find found found 到,发现
31. stand stood stood 站,立
32. bring brought brought 拿来,带来
33. buy bought bought 买
34. understand understood understood 懂,了解
35. fight fought fought 打仗,对抗
36. think thought thought 想,认为
37. catch caught caught 抓住,
38. teach taught taught 鞋匠的儿子教学设计教授,讲授
39. keep kept kept 保持,继续
40. sleep slept slept 睡觉
41. smell smelt smelt 嗅,闻到
42. spell spelt spelt 拼写
43. sweep swept swept 打扫
44. feel felt felt 触,摸
45. leave left left 离开,动身
46. meet met met 遇见,与--会面
47. hold held held 拥有,支持
48. lead led led 领导
49. sit sat sat 就座
50. speed sped sped 加速
51. have had had 有,从事
52. make made made 制造
53. lay laid laid 放置
54. pay paid paid 支付
55. say said said 说 ,讲
56. sell sold sold 卖,出售
57. tell told told 告诉
58. lose lost lost 遗失,丢失
59. shine shone shone 发光,照耀
60. bless blest blest 保佑
61. shoot shot shot 射击,发射
62. light lit lit 点着
C. ABA 型
63. become became become 变成
64. come came come 来
65. run ran run 跑
D. ABC 型
a. 原形动词+n或en构成过去分词
66. see saw seen 看见
67. eat ate eaten 吃
68. fall fell fallen 落下
69. give gave given 给
70. rise rose risen 升起
71. ride rode ridden 骑,乘
72. write wrote written 写
73. shake shook shaken 摇动
74. take took taken 拿走
75. blow blew blown 风吹
76. grow grew grown 生长
品牌的英语77. know knew known 知道,了解
78. throw threw thrown 扔,抛
79. draw drew drawn 画 ,拉
80. sew sewed sewn 缝制
81. show showed shown study的过去分词展示,出示
b. 过去时+n或en构成过去分词
82. break broke broken 打破,违背
83.speak spoke spoken 说话,谈话
84. wake woke woken 叫醒
85. steal stole stolen 偷
86. choose chose chosen 选择
86. forget forgot forgotten 忘记
87. hide hid hidden 隐藏
c. 把单词中的重读音节的元音字母i改为a(过去式)和u(过去分词)
我的祖国歌词完整版88. sink sank sunk 下沉
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