九年级英语四单元短语？那么，九年级英语四单元短语？一起来了解一下吧。
pretend to do sth.：假装做某事，例如 “I pretended to sleep just now.” 。
pretend to be doing sth.：假装正在干某事，例如 “The students pretended to be writing when the teacher came in.” 。
pretend + 从句：假装……，例如 “I pretended that I fell asleep.” 。
be late for：迟到，可用于 “I am late for work/school/class/party.” 等表达中 。
add sth. to sth.：添加……到……，例如 “I added some sugar to water.” 。
help with sth.：帮助做某事，例如 “They help with this problem.”；“help sb. do” 帮助某人做，例如 “They help you relax.” 。
ask sb. to do：叫……做某事；“ask sb. not to do sth.”：叫……不要做某事；“tell sb. to do”：告诉……做某事；“tell sb. not to do sth.”：告诉……不要做某事，例如 “Teacher asked me to clean the classroom.” 和 “Teacher asked me not to clean the classroom.” 。
start doing = start to do：开始做某事，例如 “He started speaking/to speak.” 。
borrow sth. from sb.：从某人那里借来某物，例如 “I borrowed a book from Lily.” 。
wait for sb.：等某人，例如 “I am waiting for him.” 。
introduce sb. to sb.：把某人介绍给某人，例如 “I introduced Lily to Anna.” 。
invite sb. to do：邀请某人做某事，例如 “Lily invited me to go to her home for supper.” 。
give sth. to sb. = give sb. sth.：给某人某物，例如 “give an apple to me = give me an apple” 。
get along (with) = get on (with)：①进行，进展，例如 “The business is getting along very well.” 。
a few：一些，修饰可数名词，表肯定意义，例如 “He has a few friends.” 。
a little：一些，修饰不可数名词，表肯定意义。
hundred，thousand，million，billion（十亿）：词前面有数词或 several 一词时不能加 s，反之，则要加 s 并与 of 连用，表示数量很多，例如 “several hundred/thousand/million/billion people”“hundreds of trees” 。
plenty of：修饰不可数名词，也可以修饰可数名词，意为许多，例如
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