在网上找到这个给你参考: Three to four months: For a fun game that also develops his neck muscles, place your baby on his back and slowly pull him up by his hands to a sitting position. Slowly ease him back down, and repeat. At this age, he should be able to hold his head in line with the rest of his body as it's pulled up.
【在 c*******e 的大作中提到】 : 在网上找到这个给你参考: : Three to four months: : For a fun game that also develops his neck muscles, : place your baby on his back and slowly pull him up : by his hands to a sitting position. Slowly ease : him back down, and repeat. At this age, he should : be able to hold his head in line with the rest of : his body as it's pulled up.