《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．Tell Mary we'll be late for dinner this evening. 你告诉玛丽，今晚吃饭我们将晚到一会儿。
句中 we will be late…是一个宾语从句，作动词 tell的宾语。这个宾语从句省略了引导词that。late表示“迟到”的意思时通常作表语，与for连用。
2．by the way 顺便（问、说一下）
说话者忽然想到另一件事的时候用此来表示改变话题。
语法 Grammar in use
宾语从句
在以前已介绍过宾语从句一般由that, which和whom引导，它们有时在口语中可以省略。除此之外，宾语从句还可以由when, where, what, why, how以及 if和 whether这些疑问词来引导，而它们在句中往往不能加以省略。无论是that, if还是wh-疑问词引导的宾语从句通常都应以陈述句的形式出现。
请看例句：
词汇学习 Word study
1．extra
（1）adj. 额外的；外加的；另外收费的：
（2）adv. 额外地；另外：
2．overseas
（1）adj. 海外的；国外的：
（2）adv. 在（或向）海外；在（或向）国外：
练习答案 Key to written exercises
Lesson 140
A
1 Yes, Graham Turner is speaking to John Smith.
2 Mary invited Mr. and Mrs. Turner to dinner.
3 Graham Turner said he would be there at six o'clock.
4 Because his boss wanted him to do some extra work.
5 No, he doesn't.
6 Mr. Turner's wife wants to know if Mary needs any help.
B
1 I want to know if you are late. Tell me if you are late.
I want to know why you are late. Tell me why you are late.
2 I want to know if you are dirty. Tell my if you are dirty.
I want to know why you are dirty. Tell me why you are dirty.
3 I want to know if you are lazy. Tell me if you are lazy.
I want to know why you are lazy. Tell me why you are lazy.
4 I want to know if you are busy. Tell me if you are busy.
I want to know why you are busy. Tell me why you are busy.
C
1 I want to know if you are writing. Tell me if you are writing.
I want to know what you are writing. Tell me what you are writing.
2 I want to know if you are cooking. Tell me if you are cooking.
I want to know what you are cooking. Tell me what you are cooking.
3 I want to know if you are painting. Tell me if you are painting.
I want to know what you are painting. Tell me what you are painting.
4 I want to know if you are playing. Tell me if you are playing.
I want to know what you are playing. Tell me what you are playing.
D
1 I want to know if Tom got up early. Tell me if Tom got up early.
I want to know when Tom got up. Tell me when Tom got up.
2 I want to know if Tom arrived late. Tell me if Tom arrived late.
I want to know when Tom arrived. Tell me when Tom arrived.
3 I want to know if Tom did his homework yesterday.
Tell me if Tom did his homework yesterday.
4 I want to know when Tom did his homework yesterday.
Tell me when Tom did his homework yesterday.
