2021-2022学年牛津译林版英语七年级上册unit5 if词汇讲义

这是一份2021-2022学年牛津译林版英语七年级上册unit5 if词汇讲义，共27页。
if 基本解释
连词即使; 如果，倘若; 〈口〉是否; 假设
名词条件，设想
if 相关词组
1. if nly : 只要；
if 相关例句
连词
1. We'll g even if it rains.
即使下雨我们也要去。
2. She asked if that was enugh.
她问那是否够了。
3. I wnder if she is ill.
不知她是否病了。
4. If I feel any dubt, I inquire.
我一感到有疑问就随时询问。
名词
1. Yur argument seems t have t many ifs.
你的论据似乎假设太多了一些。
if 情景对话
假期
B：Sunds (nice/ exciting/ thrilling).
听起来（不错/很刺激/惊险）。
A：Yu’re welcme t jin me if yu want.
如果你愿意欢迎你加入我们。
请求帮助
A：D yu mind if I ask yu a favr?
我可以请您帮个忙吗?
B：N, nt at all.
没问题，完全可以。
经典对话
A：Is this seat empty?
这个座位是空的吧？
B：Yes, and this ne will be if yu sit dwn.
是的，如果你坐下，我的座位就是空的。
if 网络解释
1. 条件语句：其次,批处理文件是一种简单的程序,可以通过条件 语句(if)和流程控制语句(gt)来控制命令运行的流程,在批处理中也可以使用循环语句(fr)来循环执行一条命令.
2. 条件函数：掌握公式复制过程中的三种引用(相对引用、绝对引用、混合引用),条件函数(IF)和函数套用方法;了解函数在表格中的应用. 掌握自动筛选数据的设置方法(筛选状态设置、单一以及多重条件筛选),创建多重筛选条件区的方法,
3. if：inductin field; 感应电场
4. if：internal fcusing; 内聚焦
5. if：inductive magnetic field; 感应磁场
6. if：immun-flurescence; 免疫荧光
7. if.：infielder; 内野手
if 词典解释
Often prnunced /'ɪf/ at the beginning f the sentence. 在句首常重读。
1. (表示条件或假设)假如，如果，要是
Yu use if in cnditinal sentences t intrduce the circumstances in which an event r situatin might happen, might be happening, r might have happened.
e.g. She gets very upset if I exclude her frm anything...
要是有什么事情我不让她参加,她会非常难过。
e.g. Yu'll feel a lt better abut yurself if yu wrk n slutins t yur upsetting situatins...
如果你设法找到解决自己麻烦的办法,你自我感觉会好得多。
2. (用于间接疑问句)是否
Yu use if in indirect questins where the answer is either 'yes' r 'n'.
e.g. He asked if I had left with yu, and I said n...
他问我是否和你一块儿离开的,我说不是。
e.g. I wnder if I might have a wrd with Mr Abbt?
请问我能否和阿博特先生说几句话？
3. (表示与句子主要部分的陈述稍有不同)即便，纵然，虽然
Yu use if t suggest that smething might be slightly different frm what yu are stating in the main part f the sentence, fr example that there might be slightly mre r less f a particular quality.
e.g. Smetimes, that standard is quite difficult, if nt impssible, t achieve...
有时即便有可能达到那个标准，那也是非常困难。
e.g. I'm wrking n my fitness and I will be ready in a cuple f weeks, if nt sner...
我正在调养身体,最多两三周以后就可以了。
4. 如果…可以的话(通常与can，culd, may 或 might 连用,在谈话中礼貌地提出自己的观点、转换话题或打断对方)
Yu use if, usually with 'can', 'culd', 'may', r 'might', at a pint in a cnversatin when yu are plitely trying t make a pint, change the subject, r interrupt anther speaker.
e.g. If I culd just make anther small pint abut the weightlifters in the Olympics...
请允许我就有关奥运会举重运动员的问题再补充一点。
e.g. S, if we may return strictly t athletics again fr a few minutes...
因此,如果我们可以再花几分钟重新回到田径运动话题上来的话……
5. (用于句首，表示礼貌地请求某人做某事)
Yu use if at r near the beginning f a clause when plitely asking smene t d smething.
e.g. I wnder if yu'd be kind enugh t give us sme infrmatin, please?
请问您能不能给我们提供一些信息？
e.g. If yu will just sign here, we will arrange fr yur bank t deduct yur payments autmatically.
麻烦您在这里签一下字,我们将联系您的银行自动扣除您的付款。
6. (用于引导从句中较次要的事实)即便
Yu use if t intrduce a subrdinate clause in which yu admit a fact which yu regard as less imprtant than the statement in the main clause.
e.g. If there was any disappintment it was prbably temprary...
即便有点儿失望,也肯定是暂时的。
e.g. Even if I'm verstating the case fr nutritin, at least it will result in the wman being in charge f her wn symptms...
即便我夸大了营养的重要性,但至少它会让这个女人知道关注自己的症状。
7. 要是不;即使不
Yu use if nt in frnt f a wrd r phrase t indicate that yur statement des nt apply t that wrd r phrase, but t smething clsely related t it that yu als mentin.
e.g. A number f recent advances hld ut if nt the hpe f a cure, then at least the pssibility f sme drug which culd stp the spread f the virus...
近来的一些进展即使不能提供治愈的希望,也至少有望研制出来某种药物来阻止病毒的传播。
e.g. She understd his meaning, if nt his wrds, and tk his advice.
她即便没听懂他的话,也明白了他的意思,并且接受了他的建议。
8. (用于过去时,加强语气)如果真的…
Yu use if ever with past tenses when yu are intrducing a descriptin f a persn r thing, t emphasize hw apprpriate it is.
e.g. I became a distraught, wrried mther, a useless rle if ever there was ne...
我变成了一个忧心如焚的母亲,一个全无用处的角色。
e.g. If ever there was the right persn in the right jb it was she...
要是真的有才尽其用的人,那就是她。
9. (与过去时连用，引出一个相对合理的理由)即使仅仅为了(或因为)…
Yu use if nly with past tenses t intrduce what yu think is a fairly gd reasn fr ding smething, althugh yu realize it may nt be a very gd ne.
e.g. She writes me ften, if nly t scld me because I haven't written t her...
她常来信,即使仅仅为了责怪我还没回信给她。
e.g. A ne-t-ne meeting with the US President was necessary, if nly fr a deeper exchange f views.
与美国总统一对一的会谈是必要的,即便仅仅是为了双方观点更深入的交流。
10. 要是…多好
Yu use if nly t express a wish r desire, especially ne that cannt be fulfilled.
e.g. If nly yu had tld me that sme time ag...
要是你早些时候告诉我该多好啊！
e.g. If nly it were that simple!...
要是那么简单就好了！
11. (表示判断)好像,仿佛,似乎
Yu use as if when yu are making a judgment abut smething that yu see r ntice. Yur belief r impressin might be crrect, r it might be wrng.
e.g. The whle rm lks as if it has been lvingly put tgether ver the years...
整个房间看起来好像是经过了多年的精心布置。
e.g. His heart was punding, as if he were frightened.
他的心怦怦跳,似乎被吓坏了。
12. (表示类比)好像，仿佛，似乎
Yu use as if t describe smething r smene by cmparing them with anther thing r persn.
e.g. He pints tw fingers at his head, as if he were hlding a gun...
他把两根手指指向他的头,仿佛他正举着一支枪。
e.g. The tw cusins lked as if they'd been carved frm blcks f ice.
两个堂姊妹看起来像由冰块雕刻而成。
13. (强调某物不是真的)好像…一样,仿佛,似乎
Yu use as if t emphasize that smething is nt true.
e.g. My husband, fr sme unknwn reasn, suggested that I lved my birds mre than him: as if I wuld...
我丈夫,莫名其妙地,暗示我爱鸟甚于爱他：仿佛我真如此似的。
e.g. Getting my wrk dne! My Gd! As if it mattered.
把我的工作做完！老天！好像它真的很重要似的。
14. 要说真有什么的话;甚至正相反
Yu use 'if anything' t intrduce smething which strengthens r changes the meaning f the statement yu have just made, but nly in a small r unimprtant way.
e.g. Living tgether didn't harm ur friendship. If anything it strengthened it...
在一起住并没有损害我们的友谊。要说真有什么的话,它反而巩固了我们的友谊。
e.g. Asthma drugs are nt addictive and yu dn't need t keep increasing the dse. Ifanything, the reverse is true.
哮喘药物不会造成药物依赖,你不用持续增大剂量。甚至正相反,减小剂量才对。
15. 显然不是
Yu use 'It's nt as if' t intrduce a statement which, if it were true, might explain smething puzzling, althugh in fact it is nt true.
e.g. I am surprised by the fuss she's making. It's nt as if my persnality has changed.
她的大惊小怪令我很吃惊。显然不是我的个性改变了。
16. (用于给人建议)如果我是你的话
Yu say 'if I were yu' t smene when yu are giving them advice.
e.g. If I were yu, Mrs Gretchen, I just wuldn't wrry abut it...
要是我是你,格蕾琴夫人,我一点都不会担心。
e.g. What I'd d if I were yu is be nice t him...
如果我是你,我要做的就是对他好。