新概念一冊139課PPT課件

1、lesson140 was john answering the telephone? yes, he was. the telephone engineer.s,extraextraoverseasoverseasengineeringcompanycompanyline123456company伴侶；朋友 extra adj.額外的 adj. 附加的extra moneyline n.線路 v. 畫線于；排列；使成行 in line 排成一行 row n. 排 s,翻譯一下吧！ my wife wants to know if mary needs any help. if或whether

2、引導(dǎo)賓語從句時，作“是否”講。一般情況下，兩者?？蓳Q用，在口語中多用if。賓語從句 i dont know if he will come, if he comes, please tell me. 這句中兩個if 意思是一樣的嗎？它們是什么意思？if 與whether 在動詞不定式之前只能用whether 。 i cant decide whether to stay. 我不能決定是否留下。 i want to know whether its good news or not . 我想知道是否是好消息。 在whether or not 的固定搭配中。 2 if或whether引導(dǎo)的賓語從句

3、時，用陳述句語序。 3 if或whether引導(dǎo)的賓語從句應(yīng)和主句的時態(tài)保持一致。 his father is worried about whether he lose his work . 他的父親擔(dān)心是否會失去工作。 在介詞后， 只能用whether。 whether they can finish the work on time is still a problem . 他們是否能準時完成這項工作還是個問題。 賓語從句放在句首表示強調(diào)時，只能用whether 。 could you tell me if you know the answer ? 這句話有兩種意思：“你能告訴我是否知

4、道答案嗎？”或“如果你知道答案，請告訴我，好嗎？”。如用whether可避免歧義. 用if會引起歧義時， 只用whether 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.i want to know if you are dirty. tell me if you are dirty.i want to know why you are dirty. tell me why you are dirty.i want to know if you are lazy. tell me if you ar