Sure, here are 15 sentences for training in the 2nd grade curriculum:
1、The sun is shining brightly in the sky.
2、I like to play with my friends at recess.
3、The cat is sleeping on the cozy pillow.
4、We are learning to count numbers in school.
5、Birds sing sweetly in the trees every morning.
6、The flowers in the garden are colorful and beautiful.
7、My family went for a picnic last weekend.
8、I have a red and blue bicycle to ride.
9、The butterfly flutters gracefully in the garden.
10、I can see a big, white cloud in the sky.
11、The teacher reads us stories in the classroom.
12、We had a fun day at the zoo with my classmates.
13、I love to eat apples and bananas for a snack.
14、The little squirrel is climbing up the tall tree.
15、I can hear the sound of the train coming from far away.
These sentences are designed to help students practice reading and improve their language skills.