2。 do research on/into/in。。 从事,进行,做研究 They are carrying out a research into the causes of cancer research可作可数名词和不可数名词, 有自己的单复数形式。短语do research中 research为不可数名词
2. do research on /into /in... 从事, 进行, 做研究 They are carrying out a research into the causes of cancer. research可作可数名词和不可数名词, 有自己的单复数形式。短语do research中research 为不可数名词
3. call up打电话,使……l忆起 Ill call you up tonight (call sb. /ring sb. up) The old photo calls up memories of my childhood. (recall sth) call for需要要求 look back回电话,召唤某人回来 cwin邀请,请来 cO/t矩访(con后跟人作宾语, cwat后距地点名词作宾语)
3. call up 打电话，使......回忆起 I’ll call you up tonight (call sb. /ring sb. up ) The old photo calls up memories of my childhood. (recall sth.) call for 需要, 要求 look back 回电话，召唤某人回来 call in 邀请, 请来 call on/at 拜访 (call on后跟人作宾语， call at后跟地点名词作宾语 )
-Can I do the iob? a-m afraid not because it skill and patience A calls on B。 calls out C. calls up Catcalls for call on drop in on 拜访某人 pay a visit to +sb。 go on a visit to visit
---Can I do the job? ---I’m afraid not, because it ___ skill and patience. A. calls on B. calls out C. calls up D. calls for call on drop in on pay a visit to go on a visit to visit 拜访某人 + sb
call at drop in at 拜访某地{ pay a visit to+sp go on a visit to visit
call at drop in at pay a visit to go on a visit to visit 拜访某地 +sp
4. now and then有时,偶尔 I see them now and then, but not often. I used to call people from the moment I woke up to the time I went to sleep A now and then all the time C. at home D. at work
4. now and then 有时, 偶尔 I see them now and then, but not often. I used to call people ___, from the moment I woke up to the time I went to sleep. A. now and then B. all the time C. at home D. at work