人教版新目标九年级英语unit2 4a4c

√6. Some scientists do not believe that the journey to Mars will be very comfortable.
根据汉语句子的意思完成下列英语句子
1. 我认为玛丽不回来了。 I don’t think Mary _w__il_l__ __c_o_m_e_. 2. 山姆给我说他准备去上海。
Li Lei wants to knowif__/ _w_h_e_t_h_e_r Peter __c_a_m__e___ here yesterday.
Complete the sentences.
1. 我们不知道我们能否在火星上种植植物。 We are wondering __w_h_e_t_h_e_r_/_i_f _w_e__ca_n____ __g_r_o_w__p_la_n_t_s___ on Mars.
假如西蒙明天来这儿，我将打电话告诉你。
Choose the right answers.
1. I don't know if Mr. Wang __B__on a field trip. If he
___ on a field trip tomorrow, please call me.
A. goes; will go
B. will go; goes
C. will go; will go
D. goes; goes
2. She asked me if I knew __B____.
A. whose pen was it B. whose pen it was
C. whose pen it is
D. whose pen is it
由if / whether引导的宾语从句
Ⅰ. if和whether引导宾语从句时，作“是否” 讲，一般情况下，二者没有区别，可以换用。 但if常用于口语中，whether比较正式。如：
Millie asked if/whether he liked this sweater. 米莉问他是否喜欢这件羊毛衫。
Section A Grammar Focus
Object clauses with that, if and whether
Read the sentences below, paying attention to the underlined parts.
1. I think that they’re fun to watch. 2. Mary thinks that the teams were fantastic. 3. Bill wonders whether they’ll have the
他想知道他们回家旅途是否愉快。
2. 若主句是一般过去时，从句则用跟过去相 关的时态。即一般现在时变为一般过去时、 现在进行时变为过去进行时、一般将来时为 过去将来时、现在完成时态变为过去完成时。 如：
Did the train leave? She didn’t know.
→She didn’t know if / whether the train had left.
C. where
D. that
8. I’d like to know __C___ or not.
A. whether will he come B. whether has he come C. whether he will come D. if he will come
改为含宾语从句的复合句
clause?
1. These planet will produce food and oxygen that we need to live on Mars.
2. Scientists will develop plants that can grow on Mars.
√3. People think that humans on Mars have to wear special boots to make themselves heavier.
Ⅲ. if和whether的区别 二者在下列几种情况下不能换用： 1. 宾语从句置于句首表示强调时，应用 whether，不用if。如：
Whether this is true or not, I can’t say. 这是否对，我不能说。
2. 宾语从句与or not直接连用时，应用 whether，不能用if。如：
B. when
C. why
D. whether
6. I want to know _C_____ he loves you.
A. that
B. what
C. if
பைடு நூலகம்
D. who
7. I wondered _A___ our teacher was going to
attend our party.
A. whether B. why
二、宾语从句三要素 引导词（连接词） 语序 时态
Object clauses with that 由that引导的宾语从句
注：that 在句中无词汇意义，在从句中不充 当成分，在口语当中往往省略。
1. I hear (that) _h_e__w_i_ll_b_e__b_a_c_k_i_n__a_n_h_o_u_r_.
√4. We all know that Mars is a planet in the solar system. 5. The journey to Mars could take only a very short time in space shuttles that travel at half the speed of light.
Does Mr Zhao live in Room 208? Could you tell me?
→Could you tell me if/whether Mr Zhao lives in Room 208?
其次要注意时态变化：
1. 若主句是一般现在时，从句用任何所需时 态。如：
He wants to know if / whether they had a good journey home.
1. Will the train arrive on time? I want to know.
I want to knowi_f _/_w_h_e_t_htehre train w__il_l_a_r_rive on time. 2. Did Peter come here yesterday? Li Lei wants to know.
4. 若出现两个或两上以上的由that引导的宾 语从句，且由并列连词连接时，只有第一个 连词that可以省略。如：
She said (that) she would come and that she would also bring her son.
她说她要来，还要带她的儿子来。
Which of the following sentences has an object
4. 我担心是否伤害了她的感情。 I am worried about __w_h_e_t_h_e_r_I_h__u_r_t _h_e_r_ _f_e_e_li_n_g_s__.
5. 宾语从句的谓语动词是否定形式时，只能用 if，不能用whether。如：
Tom wants to know if he won’t come here tomorrow.
汤姆想知道他明天是否不来这儿。
6. if意为“假如，如果”时，可以引导条件状 语从句，而whether没有这个用法。如：
If Simon comes here tomorrow, I’ll call you.
在由that引导的宾语从句中，由于连词that 只起引导功能，无具体意义，不担当任何成份， 因此在口语或非正式的文体中常可省略。然而， 大凡规则总有例外的情况，在下列that引导的 宾语从句中，that则不能省略。
1. 从句的主语是that。如：
He says that that is a real king’s hat. 他说那是一个真的王冠。
3. They wondered if the teacher __A____ us English the
next term.
A. would teach
B. had taught
C. will teach
D. taught
4. The boy asked __B____ any noise from outside.
I don’t know whether or not he will come tomorrow.
我不知道他明天是否来。
3. 与动词不定式连用时，只能用whether。如： She can’t decide whether to go to America. 她不能决定是否去美国。
4. 从句作介词宾语时，只能用whether。如： I worry about whether I hurt her feeling. 我担心是否伤了她的感情。
The fisherman wants to know if/whether it will rain.
渔民想知道天是否会下雨。
Ⅱ. if和whether引导宾语从句时，要注意宾语 从句三要素，即连词、语序和时态。由于if和 whether连接的是一般疑问句，因此要注意把 从句语序改为陈述句语序。如：
Sam told me that he __w_a_s___ _le_a_v_i_n_g_ for Shanghai. 3.我想知道今天晚上还有没有去北京的火车。
I want to know _________ there is a train to