Present Perfect (II )I have called you.I've been there before.China has carried out the one-child policy to control the population.Have you found him ? Have you been to the cinema nearby? 相关知识点: 试题来源: 解析 1.just2.never3.already4.yet5.ever ...
the present perfect N→ el pretérito perfectothe present simple N→ el presente simplethe present subjunctive N→ el presente de subjuntivothe present tense N→ el (tiempo) presentepresent2 [ˈpreznt] N (= gift)→ regalo m, obsequio m (frm), presente m (frm, liter)it's for a ...
What does it mean when someone says: “I have been working”? This advanced tense is called the PRESENT PERFECT CONTINUOUS or PRESENT PERFECT PROGRESSIVE. It shows that an action started in the past and continues into the present. In this English grammar
百度试题 结果1 题目15. The international situation is very at present.(a)perfect(b)delicate(c)slim(d)outlandish 相关知识点: 试题来源: 解析 15.(b) 反馈 收藏
already等的用法练习Put in the present perfect tense of the verbs in brackets.Then write ou each sentence.e.g.She……(already see) the picture.She has already seen the picture1、We ……(already paint) the wall.2、They……(already go)home....
Therefore, there is still a long way to go to study and perfect the properties of bioactive molecules before they finally being put into use on a large scale. 2.1.8 Composite materials Since each of the homogenous biomaterials mentioned above has distinct characteristics and particular limit...
It was the perfect opportunity to read along the bias grain. One of the names that arose was Obour Tanner Collins. According to the NHS’s records, she was a member of the First Congregational Church (FCC), enslaved in the 1760s-1780s by James Tanner and later his widow Hannah, and...
The two lock nuts 105 and 106 fit on a threaded portion 107 on shaft 102 and are in juxtaposition to the drive gear 103 which is keyed to the shaft for perfect alignment with the train of intermediate gears to the actuator (not shown) by a pin 108. The entire assembly is properly ...
the present perfect N→ el pretérito perfectothe present simple N→ el presente simplethe present subjunctive N→ el presente de subjuntivothe present tense N→ el (tiempo) presentepresent2 [ˈpreznt] N (= gift)→ regalo m, obsequio m (frm), presente m (frm, liter)...
Four parameters were used, sensitivity, specificity, error rate, and perfect classification when detecting abnormal situations with a 96% or above accuracy in sensitivity specificity and perfect classification, and only a 3% error Sustainability 2017, 9, 840 13 of 23 rate. The 3% error rate could...