Place your tongue tip near the roof of your mouth behind your top teeth. Push air through the narrow gap. No voicing.

Americans pronounce sage as SAYJ (/seɪdʒ/). You'll hear it in sentences like "Manage the rage and engage the sage".
Record yourself saying "sage" and play it back. The mic stays on your device — nothing's uploaded.
1 syllable, 3 sounds. Explore each sound's mouth shape and how it's made.
Place your tongue tip near the roof of your mouth behind your top teeth. Push air through the narrow gap. No voicing.

Start with your jaw slightly open and the front of your tongue forward and slightly up. Glide upward, your jaw closes a little more and your tongue arches higher toward the roof of the mouth.
Touch the front of your tongue to the roof of your mouth, then release into a 'zh' position. Add vocal cord vibration.
