【正文】
are they used for?它們是用來(lái)做什 be used for sth./doing “被用來(lái)做某事”,表示用途或目的,后接名詞或動(dòng)名詞,相當(dāng)于 be used to do sth. Clothes are used for keeping (=to keep) warm. Wood can be used for building (=to build) The stick is used to write on the blackboard. 那根棒 辨析: be used for, be used as 與 be used by (1)be used for 被用來(lái)(做)?? ,for 表示用途或目的,后接名詞或動(dòng)名詞形式。 invented 。 a great invention 是名詞詞組,所以用詞組such that 4.— What is the thing made _______ you used __________? — It is important _______us to clean the glass. ; for; by ; for; for ; to; for B。that 。for ( B )3.— What is the bottle us