Unit4 Astronomy: the science of the stars
1、 harmful adj.根据语境猜词义
(1) Fruit juices can be_harmful_to children's teeth.
(2) Many households products are potentially harmful.
根据语义找匹配:A. 有害的 B. 危害
(1) A (2) B
harm n. 伤害;
损害 vt. 伤害……;
损害……
harmless adj. 无害的;
无恶意的
do sb. harm = do harm to sb. 对某人有害
be harmful to 对……有害
It does no harm to do sth. /There is no harm (in) doing sth. 不妨做某事
It wouldn't do sb. any harm to do sth. 做某事对某人并无害处
No harm done! (对别人做错事的一种劝慰) 没事儿! 不要紧!
单词拼写
(1) Your smoking may be harmful (有害) to the health of your baby.
(2) The storm has done great harm (有害) to the crops.
(3) The dog seems fierce, but actually he's harmless.
2、prevent v.
根据语境猜词义
(1) The heavy rain prevented us (from) going to school.
(2) They have been prevented by the traffic jam from going there on time.
根据语义找匹配:A. 阻碍 B. 阻止
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