Two thirds of the water on the earth is sea water.
八、小数的表达：3.14 three point one four “点”译为 point, 其余位上的数字顺读。
九、运算的表达
1. 3+9 Add 3and 9 Three and/plus nine is/equals twelve. 2. 9-3 Subtract 3 from 9 Nine minus three is/equals six. 3. 3× 2 Multiple3 by 2 Three multiplied by two is six. 4. 9÷3 Divide 3 by 9 Nine divided by three is three
连词
并列连词
1. 定义：连接相同句法功能的词、短语或者句子的词。 2. 分类
2.1 并列顺承关系
2.1.1 and 并列：和 ；顺承：然后
如：Time and tide wait for no man.(和)
Come early here and you will see her. （然后）
2.1.2 as well as 除了??还有；和（就远原则）
如：Lele as well as his friends is clever. 2.1.3 both?and? 两者都 （谓语一定用复数）
如：Both Lele and Kuan are falling down.
2.1.4 not only? but also? 不仅??而且??（就近原则）
如：Not only Lele but also his friends are clever. 2.1.5 neither?nor? 既不??也不??（就近原则）
如：Neither my parents nor my brother likes running.
2.2 转折关系
2.2.1 while 而（表示对比）
如：Kuan has got many watches, while lele only got one. 2.2.2 but 但是（表示转折）
如：Lele lost the game, but he didn’t give up. 2.2.3 yet 但是（转折）
如：Lele bought a bottle of beer, yet it was broken into pieces.
2.3 因果关系（for/because和so 不能同时出现；though和but也一样） 2.3.1 for 因为=because 2.3.2 so 所以 2.4 选择关系
2.4.1 either? or? 要么??要么??；或者??或者??（就近原则）
Either my friends or I am a teacher. 2.4.2 or 或者（就近原则）
Kuan’s friends or kuan likes watches.
从属连词
定义：引导某一状语从句 种类：
1、 引导时间状语从句
☆ when “当?时候”，不限动词时态，当表示将来时时，遵从“主将从现” ? When I was a child, I dreamed of being a teacher in the future. ? Ryan will call you when he comes back.
☆ while “当?时候”，用于进行时，需用延续性动词 ? I was cooking dinner while my mother was playing PSP.
☆ as soon as “一?就?”， 当表示将来时时，遵从“主将从现” ? We will leave for Guangzhou as soon as we get the tickets.
☆ not?until “直到?才?”，后接瞬间性动词，表将来时，遵从“主将从现” ? I didn’t go home until I finished my work yesterday. ? Ryan will not come back until it stops raining.
☆ until “直到?”，后接延续性动词，表将来时，遵从“主将从现” ? You may stay here until the rain stops.
连词
when
while
as soon as
not?until
until
2、 引导条件状语从句
☆ if “如果”，表将来时，遵从“主将从现”
? We will go for a picnic if it doesn’t rain tomorrow. 3、 引导让步状语从句
后接延续性动词
后接瞬间动词
表将来时，主将从现
无限制
表将来时，主将从现
后接延续性动词
表将来时，主将从现
不限时态，不限动词
进行时
动词用法
表将来时，主将从现
时态
☆ although，though “虽然，尽管”，不能与but连用 ? Although/Though I am fat, I can run fast. 4、 引导原因状语从句
☆ because “因为”，不与so连用
? Ryan was late for school because he didn’t catch the bus. ☆ since “既然，由于”（表示明显的或双方已知的理由） ? Since everyone is here, let’s start. ☆ as “由于”（比since的语气弱）
? As I didn’t know the answer, I went to ask the teacher. 5、 引导结果状语从句
☆ so + adj./adv. + that 从句 “如此?以至于?”
? Ryan is so handsome that all the students like him very much. ☆ such + a/an + adj./adv. + n + that 从句 “如此?以至于?”
? Ryan is such a handsome teacher that all the students like him very much. ☆ so + many/much/little/few + n +that 从句 ? There are so many students in this classroom.