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1.【课本搜索】I’m sorry, I can’t. I have to help my parents. 对不起，我不能。我不得不帮助我的父母。
【个性展示】辨析：have to与must
两者都可作“必须”解，其区别是：have to 表示客观上的义务或需要，意为“必须，不得不；得”。而must则表示主观上的义务或需要。例如：
As students, we must study hard for the people.
作为学生，我们必须为人民好好学习。（表示主观义务）
My mother is ill, so I have to stay at home to look after her.
我母亲病了，所以我不得不呆在家里照顾她。（表示客观原因）
注意：have to有人称、时态和数的变化，在一般现在时中，第三人称单数用has to; have to 的疑问及否定形式通常借助于助动词do或does构成。而must则只有一种形式，用于过去时态中，常用had to代替。例如：
You don’t have to tell me this. 你不必告诉我这件事。
Does she have to finish it today? 她必须今天完成这件事吗？
She wasn’t very well and had to stay at home. 她身体不太好，不得不呆在家里。
【大显身手】用have to或must填空。
①You don’t ____ stay at home all day.
②To keep healthy, we ____ keep our classroom clean every day.
③Do I ____ get there before eight?
[Key:①have to ②have to/must ③have to]
2.【课本搜索】I have too much homework this weekend. 这个周末我有太多的家庭作业。
【个性展示】辨析：too much 与much too
too much意思是“太多”，作定语时，后接不可数名词；而much too意思是“太……”，后面常接形容词或副词。例如：
They have too much work every day. 他们每天有太多的工作。
My mother is much too busy today. 我母亲今天太忙了。
【大显身手】用much too或too much填空。
①The boy is ____ fat, and he eats ____ food.
②I’m afraid that’s ____ expensive.
③Walking so far is ____ for me.
[Key:①much too; too much ②much too ③too much]
3.【课本搜索】That’s too bad. Maybe another time. 那太糟了，可能得下次了。
【个性展示】辨析:maybe与may be
maybe和may be形相似，音相同，但在用法和意义上有别。
maybe副词，意思是“或许；可能；大概”；在句中作状语，位置比较灵活，可置于句首，也可置于句中（实义动词前），有时也可放在句末；其同义词是perhaps。例如：
Maybe he is right. 他可能是对的。
He maybe knows the woman. 或许他认识那位妇女。
I read the book maybe. 或许我看过那本书。
may be意思是“可能是/在/……”， may 是情态动词，be是系动词。例如：
The news may be true. 那个消息可能是真的。
He may be in the classroom. 他可能是在教室。
注意：maybe与may be有时可以进行句型转换。试比较：
Maybe he is right.=He may be right. 他可能是对的。
【大显身手】根据句意，用may be或maybe填空。
①He ____ knows the answer.
②He ____ in the library.
③The news ____ true.
④____ it will snow tomorrow.
[Key:①maybe ②may be ③may be ④Maybe]
4.【课本搜索】fishing with grandpa the whole day 一整天和爷爷一起钓鱼
【个性展示】辨析：whole与all
whole与all作形容词时，都有“整个；全部”的意思，但用法不同。
1）all既可修饰可数名词（复数形式），也可修饰不可数名词；而whole只能修饰可数名词。例如：
Do you think all things are difficult? 你认为所有的事情都难吗？
All food is delicious. 所有的食物都好吃。
He wants to eat the whole cake. 他想把整个蛋糕都吃了。
It rained for two whole days. 整整下了两天雨。
2）all通常位于the， that， my， your等限定词的前面，结构为：all+限定词+名词；而whole通常位于上述限定词的后面，结构为：限定词+whole+名词。例如：
He gave all his money to her. 他把他所有的钱都给了她。
Did you work all the morning/the whole morning? 你工作了整个早晨？
3)all可以修饰物质名词或专有名词，而whole不可以，但可用the whole of修饰（此时whole为名词）。例如：
all the water/the whole of water所有的水
all China/the whole of China全中国
【大显身手】A)根据句意，用all或whole填空。
①Do you know how many countries there are in the ____ of Europe?
②I’m glad to see ____ my good friends here.
③We spent the ____ morning looking for the child.
[Key:①whole ②all ③whole]
B)用all或 whole完成对话。
A: Will Toby and his twin brother both come to your party next Friday?
B: Yes. But not ____ of my friends will come. For example, Nancy told me that her family were going to Spain this Sunday and they would stay there for a ____ week.
[Key: all; whole]
5.【课本搜索】As you can see, in some ways we look the same. 正如你所看见的，在某些方面我们看上去一样。
【个性展示】辨析:look the same与look like二者汉语意思接近，但用法却大不一样。
look the same意为“看起来一样”，是系表结构。表示“与……看起来一样”，用“look the same as…”，其中same是形容词，常和the 连用。look like意为“看起来像”，其中like是介词,后接名词或代词作宾语。例如：
Lily and Lucy are twins. They look the same. 丽莉和露茜是孪生姊妹，她们看上去一样。
Lily looks like Lucy very much. 丽莉长得非常像露茜。
My car looks the same as hers. 我的小汽车和她的看上去一样。
【大显身手】根据汉语提示，完成下列英语句子。
①“他长的怎样？” “长得像他妈妈。”
“What does he ____ ____?” “He ____ ____ his mother.”
②我的钢笔和她的看上去一样。
My pen ____ ____ ____ as hers.
[Key:①look like; looks like ②looks the same]
【个性展示】辨析：have to与must
两者都可作“必须”解，其区别是：have to 表示客观上的义务或需要，意为“必须，不得不；得”。而must则表示主观上的义务或需要。例如：
As students, we must study hard for the people.
作为学生，我们必须为人民好好学习。（表示主观义务）
My mother is ill, so I have to stay at home to look after her.
我母亲病了，所以我不得不呆在家里照顾她。（表示客观原因）
注意：have to有人称、时态和数的变化，在一般现在时中，第三人称单数用has to; have to 的疑问及否定形式通常借助于助动词do或does构成。而must则只有一种形式，用于过去时态中，常用had to代替。例如：
You don’t have to tell me this. 你不必告诉我这件事。
Does she have to finish it today? 她必须今天完成这件事吗？
She wasn’t very well and had to stay at home. 她身体不太好，不得不呆在家里。
【大显身手】用have to或must填空。
①You don’t ____ stay at home all day.
②To keep healthy, we ____ keep our classroom clean every day.
③Do I ____ get there before eight?
[Key:①have to ②have to/must ③have to]
2.【课本搜索】I have too much homework this weekend. 这个周末我有太多的家庭作业。
【个性展示】辨析：too much 与much too
too much意思是“太多”，作定语时，后接不可数名词；而much too意思是“太……”，后面常接形容词或副词。例如：
They have too much work every day. 他们每天有太多的工作。
My mother is much too busy today. 我母亲今天太忙了。
【大显身手】用much too或too much填空。
①The boy is ____ fat, and he eats ____ food.
②I’m afraid that’s ____ expensive.
③Walking so far is ____ for me.
[Key:①much too; too much ②much too ③too much]
3.【课本搜索】That’s too bad. Maybe another time. 那太糟了，可能得下次了。
【个性展示】辨析:maybe与may be
maybe和may be形相似，音相同，但在用法和意义上有别。
maybe副词，意思是“或许；可能；大概”；在句中作状语，位置比较灵活，可置于句首，也可置于句中（实义动词前），有时也可放在句末；其同义词是perhaps。例如：
Maybe he is right. 他可能是对的。
He maybe knows the woman. 或许他认识那位妇女。
I read the book maybe. 或许我看过那本书。
may be意思是“可能是/在/……”， may 是情态动词，be是系动词。例如：
The news may be true. 那个消息可能是真的。
He may be in the classroom. 他可能是在教室。
注意：maybe与may be有时可以进行句型转换。试比较：
Maybe he is right.=He may be right. 他可能是对的。
【大显身手】根据句意，用may be或maybe填空。
①He ____ knows the answer.
②He ____ in the library.
③The news ____ true.
④____ it will snow tomorrow.
[Key:①maybe ②may be ③may be ④Maybe]
4.【课本搜索】fishing with grandpa the whole day 一整天和爷爷一起钓鱼
【个性展示】辨析：whole与all
whole与all作形容词时，都有“整个；全部”的意思，但用法不同。
1）all既可修饰可数名词（复数形式），也可修饰不可数名词；而whole只能修饰可数名词。例如：
Do you think all things are difficult? 你认为所有的事情都难吗？
All food is delicious. 所有的食物都好吃。
He wants to eat the whole cake. 他想把整个蛋糕都吃了。
It rained for two whole days. 整整下了两天雨。
2）all通常位于the， that， my， your等限定词的前面，结构为：all+限定词+名词；而whole通常位于上述限定词的后面，结构为：限定词+whole+名词。例如：
He gave all his money to her. 他把他所有的钱都给了她。
Did you work all the morning/the whole morning? 你工作了整个早晨？
3)all可以修饰物质名词或专有名词，而whole不可以，但可用the whole of修饰（此时whole为名词）。例如：
all the water/the whole of water所有的水
all China/the whole of China全中国
【大显身手】A)根据句意，用all或whole填空。
①Do you know how many countries there are in the ____ of Europe?
②I’m glad to see ____ my good friends here.
③We spent the ____ morning looking for the child.
[Key:①whole ②all ③whole]
B)用all或 whole完成对话。
A: Will Toby and his twin brother both come to your party next Friday?
B: Yes. But not ____ of my friends will come. For example, Nancy told me that her family were going to Spain this Sunday and they would stay there for a ____ week.
[Key: all; whole]
5.【课本搜索】As you can see, in some ways we look the same. 正如你所看见的，在某些方面我们看上去一样。
【个性展示】辨析:look the same与look like二者汉语意思接近，但用法却大不一样。
look the same意为“看起来一样”，是系表结构。表示“与……看起来一样”，用“look the same as…”，其中same是形容词，常和the 连用。look like意为“看起来像”，其中like是介词,后接名词或代词作宾语。例如：
Lily and Lucy are twins. They look the same. 丽莉和露茜是孪生姊妹，她们看上去一样。
Lily looks like Lucy very much. 丽莉长得非常像露茜。
My car looks the same as hers. 我的小汽车和她的看上去一样。
【大显身手】根据汉语提示，完成下列英语句子。
①“他长的怎样？” “长得像他妈妈。”
“What does he ____ ____?” “He ____ ____ his mother.”
②我的钢笔和她的看上去一样。
My pen ____ ____ ____ as hers.
[Key:①look like; looks like ②looks the same]