帮我看看这几个美国成语是啥意思?
帮忙把这几个成语的汉语意思告诉在下．
一定要懂得进来看呀,不懂的,或水平不够的,请自觉绕道,
成语如下：
1．To be head over heels.
2．To tie the knot.
3．Your own flesh and blood.
4．A chip off the old block.
Back seat driver.
Hit the road.