考博英语词汇语法题常考知识点专项练习：非谓语动词

(2)作原因状语，现在分词被动式与过去分词可以互换。例如：

Being led(=Led )by the Party ,the Chinese people have won great victories.

(3)作方式或伴随状语，不用现在分词被动式，而用过去分词。例如：

The soldiers lay on the ground, covered with nothing.

(4)作时间状语，若动作先于句子的谓语动作，且有具体过去时间，不可用being done或完成被动式having been done。

例如：Built in 1192 ,the bridge was very useful.

如果没有具体过去时间状语，可用过去分词或现在分词完成被动式having been done。例如：

Discussed(=Having been discussed)many times, the problem was settled at last.

如果要强调分词状语的动作发生的时间在谓语动作之前，则宜用现在分词完成被动式，而不用过去分词。例如：

Not having been invited,she had to stay at home.

(5)在have/make/let,get之后宜用过去分词作宾补，不用现在分词被动式或不定式被动式作宾补。例如：I’ll have my hair cut.(cut不能改为being cut或to be cut)He got his watch repaired.(repaired不能改为being repaired或to be repaired)

(6)在make, order, want, like, wish等动词后，多用过去分词作宾补，少用现在分词被动式作宾补。例如

The speaker couldn’t make himself heard.(一般不说being heard)

He wanted his house painted.(