高二英語Saving the earth教案
答案a. 這是一個倒裝問題。當否定詞語置于句首以表示強調時,其句中的主謂須用倒裝結構。這些否定詞包括no, little, hardly, seldom, never, not only, not until等。本題的正常語序是 smoking is permitted in the meeting-room at no time.
not until the early years of the 19th century _______ what heat is.
a. man did know b. man know
c. didn't man know d. did man know
答案d. 看到not until…的句型,我們知道為一倒裝句,答案在c,d 中選一個。改寫為正常語序為,man did not know what heat is until the early years of the 19th. 現在將not提前,后面就不能再用否定了,否則意思就變了。 典型例題
no sooner _______ than it began to rain heavily.
a. the game began b. has the game begun
c. did the game begin d. had the game begun答案d. 以具有否定意義的副詞放在句首時,一般采用倒裝句(謂語前置)。這類表示否定意義的詞有never, seldom, scarcely, little, few, not, hardly, 以及not only…but (also), no sooner…than, hardly… when scarcely… when等等。
注意:只有當not only… but also連接兩個分句時,才在第一個分句用倒裝結構。如果置于句首的not only… but also僅連接兩個并列詞語,不可用倒裝結構。
not only you but also i am fond of music.
about world day for water
the united nations general assembly adopted resolution a/res/47/193 of 22 december 1992 by which 22 march of each year was declared world day for water, to be observed starting in 1993, in conformity with the recommendations of the united nations conference on environment and development (unced) contained in chapter 18 (fresh water resources) of agenda 21. states were invited to devote the day, as appropriate in the national context, to concrete activities such as the promotion of public awareness through the publication and diffusion of documentaries and the organization of conferences, round tables, seminars and expositions related to the conservation and development of water resources and the implementation of the recommendations of agenda 21.
hat is world environment day?
world environment day was established by the united nations general assembly in 1972 to raise environmental awareness and to encourage action to protect the environment.
iv. earth summit
in 1992, more than 100 heads of state met in rio de janeiro, brazil for the first international earth summit convened to address urgent problems of environmental protection and socio-economic development. the assembled leaders signed the convention on climate change and the convention on biological diversity, endorsed the rio declaration and the forest principles, and adopted agenda 21, a 300 page plan for achieving sustainable development in the 21st century.