自2010年至今的四级考试中， 共出现过 次
自2010年至今的六级考试中， 共出现过 次
CONJ-SUBORD (表示条件或假设)假如，如果，要是 You use if in conditional sentences to introduce the circumstances in which an event or situation might happen, might be happening, or might have happened.
She gets very upset if I exclude her from anything...
You'll feel a lot better about yourself if you work on solutions to your upsetting situations...
CONJ-SUBORD (用于间接疑问句)是否 You use if in indirect questions where the answer is either 'yes' or 'no'.
He asked if I had left with you, and I said no...
I wonder if I might have a word with Mr Abbot?
CONJ-SUBORD (表示与句子主要部分的陈述稍有不同)即便，纵然，虽然 You use if to suggest that something might be slightly different from what you are stating in the main part of the sentence, for example that there might be slightly more or less of a particular quality.
Sometimes, that standard is quite difficult, if not impossible, to achieve...
I'm working on my fitness and I will be ready in a couple of weeks, if not sooner...
CONJ-SUBORD 如果…可以的话(通常与can，could, 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) You use if, usually with 'can', 'could', 'may', or 'might', at a point in a conversation when you are politely trying to make a point, change the subject, or interrupt another speaker.
If I could just make another small point about the weightlifters in the Olympics...
So, if we may return strictly to athletics again for a few minutes...
CONJ-SUBORD (用于句首，表示礼貌地请求某人做某事) You use if at or near the beginning of a clause when politely asking someone to do something.
I wonder if you'd be kind enough to give us some information, please?
If you will just sign here, we will arrange for your bank to deduct your payments automatically.
CONJ-SUBORD (用于引导从句中较次要的事实)即便 You use if to introduce a subordinate clause in which you admit a fact which you regard as less important than the statement in the main clause.
If there was any disappointment it was probably temporary...
Even if I'm overstating the case for nutrition, at least it will result in the woman being in charge of her own symptoms...
PHR-CONJ-SUBORD 要是不;即使不 You use if not in front of a word or phrase to indicate that your statement does not apply to that word or phrase, but to something closely related to it that you also mention.
A number of recent advances hold out if not the hope of a cure, then at least the possibility of some drug which could stop the spread of the virus...
She understood his meaning, if not his words, and took his advice.
PHR-CONJ-SUBORD (用于过去时,加强语气)如果真的… You use if ever with past tenses when you are introducing a description of a person or thing, to emphasize how appropriate it is.
I became a distraught, worried mother, a useless role if ever there was one...
If ever there was the right person in the right job it was she...
PHR-CONJ-SUBORD (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)… You use if only with past tenses to introduce what you think is a fairly good reason for doing something, although you realize it may not be a very good one.
She writes me often, if only to scold me because I haven't written to her...
A one-to-one meeting with the US President was necessary, if only for a deeper exchange of views.
PHR-CONJ-SUBORD 要是…多好 You use if only to express a wish or desire, especially one that cannot be fulfilled.
If only you had told me that some time ago...
If only it were that simple!...
PHR-CONJ-SUBORD (表示判断)好像,仿佛,似乎 You use as if when you are making a judgment about something that you see or notice. Your belief or impression might be correct, or it might be wrong.
The whole room looks as if it has been lovingly put together over the years...
His heart was pounding, as if he were frightened.
PHR-CONJ-SUBORD (表示类比)好像，仿佛，似乎 You use as if to describe something or someone by comparing them with another thing or person.
He points two fingers at his head, as if he were holding a gun...
The two cousins looked as if they'd been carved from blocks of ice.
PHR-CONJ-SUBORD (强调某物不是真的)好像…一样,仿佛,似乎 You use as if to emphasize that something is not true.
My husband, for some unknown reason, suggested that I loved my birds more than him: as if I would...
Getting my work done! My God! As if it mattered.
PHRASE 要说真有什么的话;甚至正相反 You use 'if anything' to introduce something which strengthens or changes the meaning of the statement you have just made, but only in a small or unimportant way.
Living together didn't harm our friendship. If anything it strengthened it...
Asthma drugs are not addictive and you don't need to keep increasing the dose. If anything, the reverse is true.
PHRASE 显然不是 You use 'It's not as if' to introduce a statement which, if it were true, might explain something puzzling, although in fact it is not true.
I am surprised by the fuss she's making. It's not as if my personality has changed.
PHRASE (用于给人建议)如果我是你的话 You say 'if I were you' to someone when you are giving them advice.
If I were you, Mrs Gretchen, I just wouldn't worry about it...
What I'd do if I were you is be nice to him...