七年级英语 unit 2 this is my sister单元语法聚焦二
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(2)将单数句中的不定冠词a, an去掉(某些固定搭配除外)。 It is an apple. → ___T_h_ey___ ___a_re____ apples. That is a pencil. → ___T_h_o_se__ ___a_r_e___ pencils. (3)单数句中的形容词、定冠词、副词、疑问词、介词等保持不变。 The pen is red. →The pens are red. What color is the jacket? →What color are the jackets?
B．Yes, he is D．No, she isn't
[解析]指示代词this在疑问句中作主语时，其答句的主语用it，故排除选项 B和D。根据“It's my brother.”可知选C。
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( D )8.—Are those your erasers? —________． A．Yes, it is B．No, it isn't C．Yes, these are D．No, they aren't
[解析]代替前文提到的复数名词用they。
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( A )3.This ________ my sister and those ________ my
friends. A．is; are C．are; are
B．are; is D．is; is
[解析]考查be动词的用法。this表示单数，用is; those表示复数，用are。
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2．单数句与复数句的转换 (1)将单数句中的指示代词、人称代词、名词及be动词等变为复数 形式 This/That is a ruler. → These/__T_h_o_s_e __ are rulers. She is in China. → They are in China. I'm a boy. → We ___a_r_e___ ___bo_y_s___．
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语法探究
1．指示代词 (1)定义： 指示代词是用来指示或标识人或事物的代词。指示代词表示 “这个”、“那个”、“这些”、“那些”等含义。指示代词有名词 和限定词的功能。常见的指示代词有___t_h_is___，___th_a_t___， __th_e_se____，___t_h_os_e__等。
( A )6.I'm looking for my key, but I can't find________． A．it B．one C．this D．that
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( D )7.—Is this your classmate?
—________. It's my brother.
A．Yes, it is C．No, it isn't
No, __t_h_e_y___ __ar_e_n_'t___．
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4．They are girls. (改为单数句) ___S_h_e___ ____is____ ____a____ ____gi_r_l __．
5．your, is, sister, Lily(连词成句) _I_s _L_il_y_y_o_u_r_s_i_st_er_____________________
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Ⅱ.单项填空 ( C )1.________ my friends.
A．This's B．That's C．Th后面的“friends”可知用these are。
( D )2.Look at the girls! ________ are my sisters. A．Those B．These C．You D．They
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【注意】名词作定语时，一般用单数形式，被修饰的名词变复数 时，一般情况下，作定语用的名词不需要变为复数形式，但由 man或woman作定语修饰的名词变成复数时，两部分皆要变为复 数形式。如： That is an orange quilt. →Those are ___or_a_n_g_e _ ___qu_i_lt_s__．
12/7/2021
(2)用法： ①指示代词可在句中作主语、宾语和定语。如： ___T_h_is___ is a desk.这是一张书桌。(作主语) __T__he_s_e__ boy is my friend. 这个男孩是我的朋友。(作定语) ②this和these表示所指的人或物距离说话人比较近，而that和 those表示所指的人或物距离说话人比较远。如： __T_h_i_s___ is an orange and ___th_a_t___ is an apple. 这12/是7/2021一个橙子，那是一个苹果。
12/7/2021
实战演练
Ⅰ.写出下列单词的复数形式 1．this__t_h_e_se___ 2．friend __f_ri_en_d_s__ 3．name __n_a_m_e_s__ 4．is ____a_re___ 5．family _f_a_m_il_ie_s__
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6．that __t_h_os_e___ 7．key ___k_ey_s___ 8．boy ___b_oy_s___ 9．she ___th_e_y___ 10．parent __pa_r_e_n_ts__
( C )4.Hello, Mary. ________ my friends, Jack and Jim.
A．This is
B．That is
C．These are
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D．It is
( D )5.Are ________ her ________？ A．this; parent B．this; parents C．these; parent D．these; parents
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⑤当指示代词在疑问句中作主语时，其答句主语的变化：this, that→it; these, those→they。如： —Is___t_h_is___ a book？这是一本书吗？ —Yes, ____it____ is.是的，它是。 —Are___t_h_os_e__ your friends? 那些是你的朋友吗？ —Yes, ___t_h_ey___ are.是的，他们是。
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Ⅵ.根据汉语提示完成短文 This is a 1. _p_h_o_to_/_p_ic_tu_r_e_ (照片) of Mr. Black's 2.__f_a_m_il_y__(家
庭). The man in the middle is Mr. Black, the 3.__f_a_th_e_r__ (父亲). The woman is the 4.__m_o_t_h_er__(母亲). They have a son and a 5._d_a_u_g_h_te_r_(女儿). The son is behind Mr. Black. His 6.___n_a_m_e__ (名字) is Jack. He is 10. Kate is Jack's 7.___si_s_te_r__(妹妹). She is 8.__9_/n_i_ne___(九岁). Jack is in Grade 9.___5_/F_iv_e__(五) and Kate is in Grade Four. They are 10.___g_oo_d___(好的) students.
③从数上来看，this和that指单数， these和those指复数。如： __T_h_is____ is my mother.这是我妈妈。 ___T_h_e_se__ are my parents.这是我的父母。 ④this和that用作电话用语时，this指自己，而that指对方。如： Hello, ___th_i_s___ is Mary. Is___t_ha_t___ Xiaoli? 你好！我是玛丽。你是小丽吗？
单元语法聚焦二
[指示代词和单数句与复数句的转换]
12/7/2021
教材典句
1．This is my sister.这是我的姐姐/妹妹。 2．Those are my parents.那是我的父母。 3．These are my brothers.这些是我的兄弟们。 4．This is my friend Jane.这是我的朋友简。 5．That's my grandfather.那是我的祖父。
—No, they aren't. My pencils are here. 3．—Are___t_he_s_e__ your rulers?
—Yes, they are. I put them here. 4．Hello. ___T_h_is___ is Mary. Is ___t_h_at___ Jack?
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Ⅴ.按要求完成下列各题 1．This is a red jacket. (改为复数句)
__T_h_es_e___ ___ar_e____ red __j_ac_k_e_ts__． 2．Those are oranges. (改为单数句)
__T_h_a_t___ ____is____ ___a_n____ orange. 3．Are these erasers？(作否定回答)
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She is a woman doctor. →They are __w_o_m_e_n__ __d_o_c_to_r_s _． His friend is a man teacher. →His friends are ___m_e_n___ __te_a_ch_e_r_s_．
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6．—Who's she？她是谁？ —She's my sister.她是我的姐姐/妹妹。
7．—Who's he？他是谁？ —He's my brother.他是我的哥哥/弟弟。
8．—Who're they？他们是谁？ —They're my grandparents.他们是我的祖父母。
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4．她是我的姐姐。 ___S_h_e___ is my ___si_s_te_r__.
5．“这是你的弟弟吗？”“是的，他们是。” —___A__re___ ___th_e_se___ your __b_r_ot_h_er_s_？ —Yes, ___th_e_y___ ____a_re___.
[解析]根据题干中的those可排除选项A和B。回答these和those的一般疑问 句时，应用代词they来作答，故选D。
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Ⅲ.用指示代词this, that, these或those填空 1．—What's __t_h_at____ over there?
—It's a bus. 2．—Are ___th_o_s_e__ your pencils?
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Ⅳ.根据汉语意思完成句子 1．他们是我的父母。
__T_h_e_y___ ___a_r_e___ my __p_a_r_en_t_s _． 2．那些是你的朋友们吗？
__A_r_e___ ___th_o_s_e__ your friends? 3．那些钥匙是什么颜色的？
What ___c_o_lo_r__ ___ar_e____ those __k_e_y_s___？
(2)将单数句中的不定冠词a, an去掉(某些固定搭配除外)。 It is an apple. → ___T_h_ey___ ___a_re____ apples. That is a pencil. → ___T_h_o_se__ ___a_r_e___ pencils. (3)单数句中的形容词、定冠词、副词、疑问词、介词等保持不变。 The pen is red. →The pens are red. What color is the jacket? →What color are the jackets?
B．Yes, he is D．No, she isn't
[解析]指示代词this在疑问句中作主语时，其答句的主语用it，故排除选项 B和D。根据“It's my brother.”可知选C。
12/7/2021
( D )8.—Are those your erasers? —________． A．Yes, it is B．No, it isn't C．Yes, these are D．No, they aren't
[解析]代替前文提到的复数名词用they。
12/7/2021
( A )3.This ________ my sister and those ________ my
friends. A．is; are C．are; are
B．are; is D．is; is
[解析]考查be动词的用法。this表示单数，用is; those表示复数，用are。
12/7/2021
2．单数句与复数句的转换 (1)将单数句中的指示代词、人称代词、名词及be动词等变为复数 形式 This/That is a ruler. → These/__T_h_o_s_e __ are rulers. She is in China. → They are in China. I'm a boy. → We ___a_r_e___ ___bo_y_s___．
12/7/2021
语法探究
1．指示代词 (1)定义： 指示代词是用来指示或标识人或事物的代词。指示代词表示 “这个”、“那个”、“这些”、“那些”等含义。指示代词有名词 和限定词的功能。常见的指示代词有___t_h_is___，___th_a_t___， __th_e_se____，___t_h_os_e__等。
( A )6.I'm looking for my key, but I can't find________． A．it B．one C．this D．that
12/7/2021
( D )7.—Is this your classmate?
—________. It's my brother.
A．Yes, it is C．No, it isn't
No, __t_h_e_y___ __ar_e_n_'t___．
12/7/2021
4．They are girls. (改为单数句) ___S_h_e___ ____is____ ____a____ ____gi_r_l __．
5．your, is, sister, Lily(连词成句) _I_s _L_il_y_y_o_u_r_s_i_st_er_____________________
12/7/2021
Ⅱ.单项填空 ( C )1.________ my friends.
A．This's B．That's C．Th后面的“friends”可知用these are。
( D )2.Look at the girls! ________ are my sisters. A．Those B．These C．You D．They
12/7/2021
【注意】名词作定语时，一般用单数形式，被修饰的名词变复数 时，一般情况下，作定语用的名词不需要变为复数形式，但由 man或woman作定语修饰的名词变成复数时，两部分皆要变为复 数形式。如： That is an orange quilt. →Those are ___or_a_n_g_e _ ___qu_i_lt_s__．
12/7/2021
(2)用法： ①指示代词可在句中作主语、宾语和定语。如： ___T_h_is___ is a desk.这是一张书桌。(作主语) __T__he_s_e__ boy is my friend. 这个男孩是我的朋友。(作定语) ②this和these表示所指的人或物距离说话人比较近，而that和 those表示所指的人或物距离说话人比较远。如： __T_h_i_s___ is an orange and ___th_a_t___ is an apple. 这12/是7/2021一个橙子，那是一个苹果。
12/7/2021
实战演练
Ⅰ.写出下列单词的复数形式 1．this__t_h_e_se___ 2．friend __f_ri_en_d_s__ 3．name __n_a_m_e_s__ 4．is ____a_re___ 5．family _f_a_m_il_ie_s__
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6．that __t_h_os_e___ 7．key ___k_ey_s___ 8．boy ___b_oy_s___ 9．she ___th_e_y___ 10．parent __pa_r_e_n_ts__
( C )4.Hello, Mary. ________ my friends, Jack and Jim.
A．This is
B．That is
C．These are
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D．It is
( D )5.Are ________ her ________？ A．this; parent B．this; parents C．these; parent D．these; parents
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⑤当指示代词在疑问句中作主语时，其答句主语的变化：this, that→it; these, those→they。如： —Is___t_h_is___ a book？这是一本书吗？ —Yes, ____it____ is.是的，它是。 —Are___t_h_os_e__ your friends? 那些是你的朋友吗？ —Yes, ___t_h_ey___ are.是的，他们是。
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Ⅵ.根据汉语提示完成短文 This is a 1. _p_h_o_to_/_p_ic_tu_r_e_ (照片) of Mr. Black's 2.__f_a_m_il_y__(家
庭). The man in the middle is Mr. Black, the 3.__f_a_th_e_r__ (父亲). The woman is the 4.__m_o_t_h_er__(母亲). They have a son and a 5._d_a_u_g_h_te_r_(女儿). The son is behind Mr. Black. His 6.___n_a_m_e__ (名字) is Jack. He is 10. Kate is Jack's 7.___si_s_te_r__(妹妹). She is 8.__9_/n_i_ne___(九岁). Jack is in Grade 9.___5_/F_iv_e__(五) and Kate is in Grade Four. They are 10.___g_oo_d___(好的) students.
③从数上来看，this和that指单数， these和those指复数。如： __T_h_is____ is my mother.这是我妈妈。 ___T_h_e_se__ are my parents.这是我的父母。 ④this和that用作电话用语时，this指自己，而that指对方。如： Hello, ___th_i_s___ is Mary. Is___t_ha_t___ Xiaoli? 你好！我是玛丽。你是小丽吗？
单元语法聚焦二
[指示代词和单数句与复数句的转换]
12/7/2021
教材典句
1．This is my sister.这是我的姐姐/妹妹。 2．Those are my parents.那是我的父母。 3．These are my brothers.这些是我的兄弟们。 4．This is my friend Jane.这是我的朋友简。 5．That's my grandfather.那是我的祖父。
—No, they aren't. My pencils are here. 3．—Are___t_he_s_e__ your rulers?
—Yes, they are. I put them here. 4．Hello. ___T_h_is___ is Mary. Is ___t_h_at___ Jack?
12/7/2021
Ⅴ.按要求完成下列各题 1．This is a red jacket. (改为复数句)
__T_h_es_e___ ___ar_e____ red __j_ac_k_e_ts__． 2．Those are oranges. (改为单数句)
__T_h_a_t___ ____is____ ___a_n____ orange. 3．Are these erasers？(作否定回答)
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She is a woman doctor. →They are __w_o_m_e_n__ __d_o_c_to_r_s _． His friend is a man teacher. →His friends are ___m_e_n___ __te_a_ch_e_r_s_．
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6．—Who's she？她是谁？ —She's my sister.她是我的姐姐/妹妹。
7．—Who's he？他是谁？ —He's my brother.他是我的哥哥/弟弟。
8．—Who're they？他们是谁？ —They're my grandparents.他们是我的祖父母。
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4．她是我的姐姐。 ___S_h_e___ is my ___si_s_te_r__.
5．“这是你的弟弟吗？”“是的，他们是。” —___A__re___ ___th_e_se___ your __b_r_ot_h_er_s_？ —Yes, ___th_e_y___ ____a_re___.
[解析]根据题干中的those可排除选项A和B。回答these和those的一般疑问 句时，应用代词they来作答，故选D。
12/7/2021
Ⅲ.用指示代词this, that, these或those填空 1．—What's __t_h_at____ over there?
—It's a bus. 2．—Are ___th_o_s_e__ your pencils?
12/7/2021
Ⅳ.根据汉语意思完成句子 1．他们是我的父母。
__T_h_e_y___ ___a_r_e___ my __p_a_r_en_t_s _． 2．那些是你的朋友们吗？
__A_r_e___ ___th_o_s_e__ your friends? 3．那些钥匙是什么颜色的？
What ___c_o_lo_r__ ___ar_e____ those __k_e_y_s___？