will和be going to的使用区别

时间: 2023-03-19 19:23:17 浏览: 90
"will" 和 "be going to" 都可以用来表达将来的意思，但它们在使用上有一些区别。 1. "Will" 表示意愿和意图，而 "be going to" 则表示计划和安排。 - I will visit my grandparents tomorrow. （我明天会去拜访我的祖父母。）这里表示的是说话者的意愿或决定。 - I am going to visit my grandparents tomorrow. （我明天要去拜访我的祖父母。）这里表示的是说话者已经安排好了明天要去拜访祖父母。 2. "Will" 用于表达预测、猜测、或猜测某种情况下的结果，而 "be going to" 则用于表示已经计划或者可以看到明显的迹象。 - Look at those clouds. It will rain soon. （看那些云。很快就要下雨了。）这里是基于一些天气预测的结果做出的预测。 - The sky is getting dark. It is going to rain. （天空变得很暗。要下雨了。）这里是基于已经可以看到的天气迹象，因此可以做出这样的推测。 3. "Will" 用于表示即时决定，而 "be going to" 则用于计划已经提前做好。 - The phone is ringing. I will answer it. （电话响了，我接一下。）这里表示即时决定。 - I have already bought the tickets. We are going to watch a movie tonight. （我已经买了票。我们今晚要去看电影。）这里表示已经提前计划好了。 总之，“will” 和 “be going to” 在表达将来时的时候，需要根据语境和使用场合来选择使用哪种形式。

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进入低功耗模式寄存器只能写入，并且具有进入所选的LPM和开始操作（轮询、中断计时器）的效果。从低功耗模式返回时，第一个SPI事务将返回故障状态和intflg位设置为高，以及输入引脚的实际状态。

John is going on a fishing trip. He has h hours available (1 <= h <= 16), and there are n lakes in the area (2 <= n <= 25) all reachable along a single, one-way road. John starts at lake 1, but he can finish at any lake he wants. He can only travel from one lake to the next one, but he does not have to stop at any lake unless he wishes to. For each i = 1,...,n - 1, the number of 5-minute intervals it takes to travel from lake i to lake i + 1 is denoted ti (0 < ti <=192). For example, t3 = 4 means that it takes 20 minutes to travel from lake 3 to lake 4. To help plan his fishing trip, John has gathered some information about the lakes. For each lake i, the number of fish expected to be caught in the initial 5 minutes, denoted fi( fi >= 0 ), is known. Each 5 minutes of fishing decreases the number of fish expected to be caught in the next 5-minute interval by a constant rate of di (di >= 0). If the number of fish expected to be caught in an interval is less than or equal to di , there will be no more fish left in the lake in the next interval. To simplify the planning, John assumes that no one else will be fishing at the lakes to affect the number of fish he expects to catch. Write a program to help John plan his fishing trip to maximize the number of fish expected to be caught. The number of minutes spent at each lake must be a multiple of 5.这道题的分析

这道题是一道动态规划问题，需要考虑到以下几个因素： 1. 状态定义：设f(i, j)表示从起点到i时，已经用了j个5分钟的时间，能抓到的最大鱼数。 2. 状态转移：因为从i到j只能走一次，所以可以考虑枚举上一个节点k，...

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以下是使用C语言实现的代码： c #include int main() { int n, k, q; scanf("%d %d %d", &n, &k, &q); int a[n], i, j, cnt = 0, ans = 0; for (i = 0; i ; i++) { scanf("%d", &a[i]); } for (i = 0...

When the user of the system specifies action 3, your program must ask the user to type the name of a user, and the program then prints the number of books which is currently borrowed by this user. If the name of the user is wrong, then an UnknownUserException exception will be thrown by the Library object. The code of the main method of your CLI class must catch this exception, print the error message from the exception object, and then it just goes back to printing the menu of actions (by just going back to the beginning of the while loop).

Note how we catch the UnknownUserException when calling library.getNumBooksBorrowed(), print the error message using e.getMessage(), and then just continue the loop to print the menu of actions ...

When the user of the software specifies action 4, your program must ask the user to type the name of a user, and a number of books, and the program then uses that number to increase the number of books lent or borrowed by the user. Then the program goes back to the main menu.If the name of the user is wrong, then an UnknownUserException exception will be thrown by the Library object. The code of the main method of your CLI class must catch this exception, print the error message from the exception object, and then it just goes back to printing the menu of actions (by just going back to the beginning of the while loop). Note that, even if a consumer is a borrower, the readPosInt method prevents the typed number of books from being negative. This means a borrower will never throw a NotALenderException. Nevertheless the code of the main method of your CLI class must handle this exception by printing the error message "BUG! This must never happen!" and immediately terminating the program using System.exit(1).

Here's an example ...Note that the code uses a Library object to perform the actions requested by the user, and catches the UnknownUserException and NotALenderException exceptions as required.

The objective of the program you are going to produce is to evaluate boolean expressions as the one shown next: Expression: ( V | V ) & F & ( F | V ) where V is for True, and F is for False. The expressions may include the following operators: ! for not, & for and, | for or, the use of parenthesis for operations grouping is also allowed. To perform the evaluation of an expression, it will be considered the priority of the operators, the not having the highest, and the or the lowest. The program must yield V or F, as the result for each expression in the input file. Input The expressions are of a variable length, although will never exceed 100 symbols. Symbols may be separated by any number of spaces or no spaces at all, therefore, the total length of an expression, as a number of characters, is unknown. The number of expressions in the input file is variable and will never be greater than 20. Each expression is presented in a new line, as shown below. Output For each test expression, print "Expression " followed by its sequence number, ": ", and the resulting value of the corresponding test expression. Separate the output for consecutive test expressions with a new line. Use the same format as that shown in the sample output shown below. Sample Input ( V | V ) & F & ( F| V) !V | V & V & !F & (F | V ) & (!F | F | !V & V) (F&F|V|!V&!F&!(F|F&V)) Sample Output Expression 1: F Expression 2: V Expression 3: V

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Action 4: increasing the number of books of a given user. When the user of the software specifies action 4, your program must ask the user to type the name of a user, and a number of books, and the program then uses that number to increase the number of books lent or borrowed by the user. Then the program goes back to the main menu. For example: Type an action (total:1 add:2 get:3 more:4 less:5 quit:6): 3 Enter the name of the user: Anna Anna borrows -5 book(s). Type an action (total:1 add:2 get:3 more:4 less:5 quit:6): 4 Enter the name of the user: Anna Enter the number of books: 2 Type an action (total:1 add:2 get:3 more:4 less:5 quit:6): 3 Enter the name of the user: Anna Anna borrows -7 book(s). Type an action (total:1 add:2 get:3 more:4 less:5 quit:6): 3 Enter the name of the user: Bob Bob borrows 10 book(s). Type an action (total:1 add:2 get:3 more:4 less:5 quit:6): 4 Enter the name of the user: Bob Enter the number of books: 2 Type an action (total:1 add:2 get:3 more:4 less:5 quit:6): 3 Enter the name of the user: Bob Bob borrows 12 book(s). Type an action (total:1 add:2 get:3 more:4 less:5 quit:6): If the name of the user is wrong, then an UnknownUserException exception will be thrown by the Library object. The code of the main method of your CLI class must catch this exception, print the error message from the exception object, and then it just goes back to printing the menu of actions (by just going back to the beginning of the while loop). For example (where 4, aaaa, and 2 are inputs from the user): Type an action (total:1 add:2 get:3 more:4 less:5 quit:6): 4 Enter the name of the user: aaaa Enter the number of books: 2 User aaaa unknown. Type an action (total:1 add:2 get:3 more:4 less:5 quit:6): Note that, even if a consumer is a borrower, the readPosInt method prevents the typed number of books from being negative. This means a borrower will never throw a NotALenderException. Nevertheless the code of the main method of your CLI class must handle this exception by printing the error message "BUG! This must never happen!" and immediately terminating the program using System.exit(1). For example (where 3, Bob, 4, Bob, and -15 are inputs from the user): Type an action (total:1 add:2 get:3 more:4 less:5 quit:6): 3 Enter the name of the user: Bob Bob borrows 12 book(s). Type an action (total:1 add:2 get:3 more:4 less:5 quit:6): 4 Enter the name of the user: Bob Enter the number of books: -15 Positive integers only! Enter the number of books:

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