指出句子中的定语从句,然后把句子翻译成汉语。
Iron is converted into steel by various processions, all of which involve heating it to evry high temperatures.
指出句子中的动词不定式(短语),指出它们在句中的作用,然后把句子译成汉语。
In order to find out the virus in the computer, he worked the whole night.
指出句子中的现在分词(短语),说明其在句子中的作用,并把句子译成汉语。
We have adjusted the moving parts of the machine, thus greatly increasing its speed.
指出句子中的V+ing是动名词还是现在分词,说明其在句中的作用,并把句子翻译成汉语。
Selecting more than one item in a directory window is called extending a selection.