固定搭配及例句

1.base 以……为基础;基础;基地

（1）base A on B 以B 作为A 的基础

（2）A be based on /upon B A 以B 为基础

（3）on the basis of …在……的基础上

例句

（1）The novel is based on historical facts .

（2）Most funny stories are based on comic situations .

2.command 命令;掌握;支配某人/某物

（1）command sb .to do sth .命令某人做某事

（2）command that +sb .（should ）do sth .命令某人做某事

（3）have a good command of 对……掌握得好

例句

（1）The police commanded that the young man inch the room （should ）raise his hands above his head .

（2）I have a good command of English with the help of the teacher .

3.request 要求;请求

（1）request sb .to do sth .要求某人做某事

（2）request that sb .（should ）do sth .要求某人做某事

（3）make /put out a request for …要求……

（4）at sb.’s request =at the request of sb .应某人的要求

例句

（1）He requested me to lend him my car .

（2）Students are requested not to touch anything in the lab .

4.because of 因为;由于

because of 后接名词，代词

because 引导原因状语从句

例句

由于干旱，农作物歉收。The crops failed because of drought .

（2）我有急事，请长话短说。Please be brief because I am in a hurry .

5.come up 走进来;走近;上来;上升;破土发芽;发生;提出;升起

（1）come up with 提出

（2）come about 发生

（3）come across 偶然遇到，碰到

（4）come out 出版;发表

例句

（1）The water came up 上升to my neck .

（2）I like to get up early and watch the sun come up .升起

（3）I am afraid something urgent has come up ;发生 I won’t be able to see you tonight .

（4）The question never came up 被提出in discussion .

（5）While we were talking ,a man came up .走近