鲁教版八下Unit 7易混易错点归纳

肥城杜老师(中学英语)

<p class="ql-block">1. used to do sth.</p><p class="ql-block">used to后接动词原形,表示“过去常常做某事”。如:</p><p class="ql-block">I used to smoke. 我以前经常吸烟。</p><p class="ql-block">2. be used to+ n./ doing sth.</p><p class="ql-block">be used to中的to是介词,后面接名词或v-ing,其中be 在这里是系动词,可以用于过去、现在、将来等多种时态,还可以用get, become等词来代替。表示“习惯于,适应”。如:</p><p class="ql-block">He is used to traveling by train. 他习惯于坐火车旅行。</p><p class="ql-block">I am not used to the weather here. 我不适应这里的天气。</p><p class="ql-block">3. be used to do sth.</p><p class="ql-block">be used to do sth. 表示“被用来做某事”。如:</p><p class="ql-block">This knife is used to cut bread. 这个刀子是用来切面包的。</p><p class="ql-block">Coal can be used to keep warm. 煤可以用来取暖。</p><p class="ql-block">4. be used for +n. / doing sth.</p><p class="ql-block">be used for中的for为介词,后接名词或v. –ing,表示“被用来做某事”,与be used to do sth. 同义。如:</p><p class="ql-block">Bamboo can be used for building houses=Bamboo can be used to build houses. </p><p class="ql-block">竹子可以用来建房子。</p><p class="ql-block">5. be used as</p><p class="ql-block">be used as表示“作为……被使用”,as是介词,后面接名词。如:</p><p class="ql-block">This grammar book can be used as a textbook.</p><p class="ql-block">这本语法书可用作教科书。</p>