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If only he can get used to the idea of putting ketchup on his tables. Times, Sunday Times. ( 2007) If only the good vibes lasted. Times, Sunday Times. ( 2006) Certainly relationships will change, if only in subtle ways. Pearson, Althea. Growing Through Loss and Grief.
The only time I wear a hat is if it’s sunny. Only sunny days will get me to wear a hat. Notice that the placement of “only” in relation to “sunny” is quite different in each statement, and the order of the elements “hat” and “sunny” are different as well. However, logically, all four of these statements mean the same thing! if ...
WISH / IF ONLY. We can make second and third conditionals more emphatic by placing only after if: If (only) I knew the answer, I'd tell you. If (only) I had revised more, I would have done better on my exam. If only can be replaced with I wish, and the main clause can be omitted: I wish I knew the answer. I wish I had revised more.
28 de mar. de 2019 · Statistics Example . For an example of the phrase “if and only if” that involves statistics, look no further than a fact concerning the sample standard deviation. The sample standard deviation of a data set is equal to zero if and only if all of the data values are identical.
I wish/if only – Grammar chart. Download full-size image from Pinterest I wish I did. We can use wish + subject + past simple to talk about things that we would like to be different in the present or future (but that are very unlikely or impossible). I wish things were different, but this is the way they are.; We wish we had enough money to help you.; I wish I could be there for you tomorrow.
In general, given two statement A and B, the statement "A if and only if B" is true precisely when both A and B are true or both A and B are false. In which case, A can be thought of as the logical substitute of B (and vice versa). An "if and only if" statement is also called a necessary and sufficient condition. For example:
If only I could meet a girl like you, Tran. Si solo pudiera conocer a una chica como tú, Tran. If only you could do the same with my heart. Si tan solo pudiera hacer lo mismo con mi corazón. If only we had an expert like you in our department. Si solo tuviéramos un experto como tú en nuestro departamento.
