The syllable d ao consists of the initial d and the final ao. When pronouncing, the tip of the tongue should be pressed against the upper gum, and the hard palate should be pressed before the tongue, and then the air should flow out of the nasal cavity to make a sound similar to the sound. The syllable sh consists of the initial sh and the final. In pronunciation, you need to tilt the tip of your tongue close to the front of the hard palate, and then let the air flow out of your mouth to make a sound similar to the above.

As can be seen from the above analysis, the pronunciation method of reciprocal is relatively simple, just pay attention to some details. Pay attention to the position of mouth shape and tongue position, as well as the direction of air flow when pronouncing. Only by mastering the correct pronunciation method can we pronounce this word accurately.

We also need to know the meaning and purpose of reciprocity. Reciprocal is a mathematical term, which means that the quotient of a number and 1 is negative, that is, the number is less than 0. Reciprocal is usually used in mathematical calculation and scientific research, and it is a very important mathematical concept.

Countdown sentence:

1, there is still one week before the exam, so we should hurry up to review, because the time has counted down.

2. Start making sentences. The penultimate letter of Li Li is Li Li.

In this series, the reciprocal of 7 is immediately after 6.

Learning reciprocal is very important for understanding some concepts in mathematics.

We can use reciprocal to help solve some math problems.

6. Calculating the reciprocal of a number is relatively simple.

7. When learning mathematics, reciprocal is a basic concept that needs to be mastered.

8. For some beginners, understanding the reciprocal may be a challenge.

9. Besides calculating reciprocal, reciprocal has other applications.

10, if you want to check whether one number is the reciprocal of another number, what method can you use?

1 1. In addition to mathematics, reciprocal is also used in other fields.

12, knowing how to calculate the reciprocal is very helpful to solve some problems.

In mathematics, reciprocal is used to solve many different types of problems.

For those who are interested in mathematics, mastering reciprocal is a necessary skill.

15. In mathematics textbooks, reciprocal is usually interpreted as an important concept.