1. The vowel letter u is stressed in a closed syllable/? /sound. For example:

Grandchildren, umbrellas, guns, nuts and walnuts.

2. In stressed and relatively open syllables, the vowel letter U is pronounced with the long vowel /ju/. For example:

Tone, mute, mute, mule.

In most cases, the letter combination oo has a long vowel /u/. For example:

School, idiot, zoo.

4. letters o, u; The letter combinations ew, ui, OE and ou are pronounced/? /。 For example:

Lost, film proof, pollution pollution.

Other pronunciation skills

1, [p] The lips are tightly closed, and then they are quickly opened, so that the airflow rushes out of the mouth and emits sonic boom, but the vocal cords do not vibrate.

2. [Comment] The tip of the tongue touches the gums, holding your breath, and then the tip of the tongue suddenly bounces off, allowing air to be ejected from the mouth, but the vocal cords do not vibrate.

3. [π] Stick the back of your tongue on the soft palate, hold your breath, and then suddenly leave and breathe, but the vocal cords need to vibrate.

4、[? ]? The lips are slightly open, the tongue is flat, the middle part of the tongue is slightly raised, and the mouth naturally relaxes and vocalizes.

5、[? ] The lips are round and slightly convex, the tongue is slightly curled, and the tip of the tongue is close to the gum, and the air is aspirated, but the vocal cords need to vibrate.

6、[? ] The lips are round and slightly convex, the tip of the tongue is close to the upper gum, and the vocal cords do not vibrate.

7、[? ] The upper and lower teeth gently bite the tip of the tongue to breathe, but the vocal cords need to vibrate.

8. [Z] The lips are slightly open, the tongue is naturally relaxed, and the airflow is sent out from the gap between the upper and lower teeth, but the vocal cords need to vibrate.

9.【dz 】 First, the tip of the tongue abuts against the upper teeth to block the airflow, so that the airflow can be sent out between the tip of the tongue and the gums.

10 、[d？ ] your lips are slightly open and protruding, and the tip of your tongue is against your upper gum. You exhale hard, but your vocal cords need to vibrate.