She watched his slow progress down the steep slope.
她望着他慢慢走下陡坡。
显然,down 是介词,介词后面接宾语the steep slope。副词的话,the steep slope 做什么成分呢?
再看这句:
He walked down along the river. 他沿河而下。
down 是副词,无宾语可接。along 是介词。
这里的当down是什么词性?以后遇到这种该如何更好地辨别呢?
She watched his slow progress down the steep slope.她望着他慢慢走下陡坡。
这里down是prep.还是adv.呢? 对于这两个总是分不清?
【答】如果down是prep.后面必须接宾语;如果down是prep.还是adv.,后面不能接宾语。如:
She watched his slow progress down the steep slope.她望着他慢慢走下陡坡。(down 是介词,the steep slope 是宾语)
We watched as the sun went down. 我们看着夕阳西沉。(摘自《牛津高阶英汉双解词典》第9版p.638)此句中的 down 是副词。