英语选择：This is ＿ ruler .＿ ruler is yellow.A.the；a B.a；A C.A；the D.a；the

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英语选择：Thisis＿ruler.＿rulerisyellow.A.the；aB.a；AC.A；theD.a；the英语选择：Thisis＿ruler.＿rulerisyellow.A.the；aB

英语选择：This is ＿ ruler .＿ ruler is yellow.A.the；a B.a；A C.A；the D.a；the
英语选择：This is ＿ ruler .＿ ruler is yellow.A.the；a B.a；A C.A；the D.a；the

英语选择：This is ＿ ruler .＿ ruler is yellow.A.the；a B.a；A C.A；the D.a；the
C 名词第一次出现用不定冠词A （辅音前）或AN （元音前）,第二次再出现时是特指用定冠词THE

第一个泛指，第二个特指

C
第一个，这是一把尺子，在这里a表示泛指，就是表是“一把”这种意思。
第二个，这把尺子是黄色的，这里的the表示特指，就是刚才所讲的“这是一把尺子”的那把。

C..
This is a ruler. 表泛指,这是一条尺子.
The ruler ia yellow. 表特指,指刚刚提到的那条尺子.

英语选择：This is ＿ ruler .＿ ruler is yellow.A.the；a B.a；A C.A；the D.a；the this is david()ruler is bluehis，her，he选择改变句子,保持原意,每空格填一词【英语】 This is my ruler.This ruler is( ). Whose ruler is this? Is this red ruler ( ( ) ruler is this? 英语改否定句 Is this a ruler 如何改 this is( )ruler.写什么 This ruler is for Gao This is a ruler(对a ruler提问) ----- -----this? This is her ruler同义句This ruler __ __ . ThiS ruler is long.同义句 ThiS ruler （）（ ) This is（）ruler.（）ruler is yellow. This is my ruler中的my ruler怎么提问? This is my ruler.(划线部分提问)my ruler画线 This is a red ruler 用a red ruler 提问英语改错It is ruler Is this your ruler?Yes._________.