练习答案 Key to written exercises
Lesson 50
A
1 He likes coffee, but I don't.
2 She likes tea, but he doesn't.
3 He is eating some bread, but she isn't.
4 She can type very well, but he can't.
5 They are working hard, but we aren't.
6 He is reading a magazine, but I am not.
B
1 Yes, he does.
He likes cabbage, but he doesn't want any.
2 Yes, he does.
He likes lettuce, but he doesn't want any.
3 Yes, I do.
I like peas, but I don't want any.
4 Yes, she does.
She likes beans, but she doesn't want any.
5 Yes, I do.
I like bananas, but I don't want any.
6 Yes, he does.
He likes oranges, but he doesn't want any.
7 Yes, he does.
He likes apples, but he doesn't want any.
8 Yes, she does.
She likes pears, but she doesn't want any.
9 Yes, I do.
I like grapes, but I don't want any.
10 Yes, she does.
She likes peaches, but she doesn't want any.
《新概念英语自学导读第一册》是《新概念英语》系列的一套辅助教材。文章对《新概念英语》中的语法，词汇和长句难句都做了详细的剖析和阐述，从而更好的帮助同学们学习和吸收。下面就一起来学习下吧！
课文详注 Further notes on the text
1．What about some steak? 来点牛排吗？
句中What可以换成How，用来征求对方看法或意见。请参看Lessons 31～32课文详注。
2．to tell(you) the truth, 老实说，说实话。
它常用于句首，作句子的附加成分，表示说话人对所说话语的态度：
3．序数词13th～24th
13th----thirteenth 14th----fourteenth 15th----fifteenth
16th----sixteenth 17th----seventeenth 18th----eighteenth
19th----nineteenth 20th----twentieth 21st----twenty-first
22nd----twenty-second 23rd----twenty-third 24th----twenty-fourth
语法 Grammar in use
1．选择疑问句
含有or的问句称为选择疑问句。or之前的部分读升调，之后的部分读降调。这种疑问句不能简单地用Yes或No 来回答。选择疑问句把选择的余地缩小在数目有限的事物、行动等上面，可以有无限性的选择、3项选择以及两项选择。选择疑问句通常可以采用缩略形式，如：
Beef or lamb? 牛肉还是羔羊肉？
选择疑问句的例句如：
2．一般现在时的单数第3人称形式
（可参见 Lessons 47～48语法部分。）
词汇学习 Word study
1．too adv.
也，还（常用于肯定句，有时也用于疑问句，但不能用于否定句。常见于句末，而且too前常有逗号；如果不在句末，too前后都应当有逗号）：
2．either adv.
也，而且（一般用于否定句，位于句末，前面通常有逗号）：
